diff --git a/.gitignore b/.gitignore
index e360e75..35e9b8c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 /node_modules
 
+/coverage
+
 /src/**/*.js
diff --git a/circle.yml b/circle.yml
index 001e16f..ded153c 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,3 +1,7 @@
 machine:
   node:
     version: 8.4.0
+test:
+  override:
+    - npm test -- --coverage
+    - ~/redux-token-auth/node_modules/.bin/codecov -t $CODECOV_TOKEN
diff --git a/package-lock.json b/package-lock.json
index 8ab5677..3d6e68b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,14 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@types/axios": {
-      "version": "0.14.0",
-      "resolved": "https://registry.npmjs.org/@types/axios/-/axios-0.14.0.tgz",
-      "integrity": "sha1-7CMA++fX3d1+udOr+HmZlkyvzkY=",
-      "requires": {
-        "axios": "0.16.2"
-      }
-    },
     "@types/jest": {
       "version": "20.0.8",
       "resolved": "https://registry.npmjs.org/@types/jest/-/jest-20.0.8.tgz",
@@ -67,9 +59,9 @@
       "dev": true
     },
     "ansi-escapes": {
-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
-      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-3.0.0.tgz",
+      "integrity": "sha512-O/klc27mWNUigtv0F8NJWbLF00OcegQalkqKURWdosW08YZKi4m6CnSUSvIZG1otNJbTWhN01Hhz389DW7mvDQ==",
       "dev": true
     },
     "ansi-regex": {
@@ -112,6 +104,12 @@
         "sprintf-js": "1.0.3"
       }
     },
+    "argv": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/argv/-/argv-0.0.2.tgz",
+      "integrity": "sha1-7L0W+JSbFXGDcRsb2jNPN4QBhas=",
+      "dev": true
+    },
     "arr-diff": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-2.0.0.tgz",
@@ -157,6 +155,12 @@
       "integrity": "sha1-104bh+ev/A24qttwIfP+SBAasjQ=",
       "dev": true
     },
+    "astral-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
+      "integrity": "sha512-+Ryf6g3BKoRc7jfp7ad8tM4TtMiaWvbF/1/sQcZPkkS7ag3D5nMBCe2UfOTONtAkaG0tO0ij3C5Lwmf1EiyjHg==",
+      "dev": true
+    },
     "async": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/async/-/async-2.5.0.tgz",
@@ -258,14 +262,13 @@
       }
     },
     "babel-jest": {
-      "version": "20.0.3",
-      "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-20.0.3.tgz",
-      "integrity": "sha1-5KA7E9wQOJ4UD8ZF0J/8TO0wFnE=",
+      "version": "21.0.2",
+      "resolved": "https://registry.npmjs.org/babel-jest/-/babel-jest-21.0.2.tgz",
+      "integrity": "sha512-7nF+URWcIVX3A9DiLRcuwq86a+Phl+wXN/fwlSO4boTP/GmLLVyIQTui3th7tbA8F3L5xkYEO0e3NSf7oB/BJQ==",
       "dev": true,
       "requires": {
-        "babel-core": "6.26.0",
         "babel-plugin-istanbul": "4.1.4",
-        "babel-preset-jest": "20.0.3"
+        "babel-preset-jest": "21.0.2"
       }
     },
     "babel-messages": {
@@ -289,9 +292,9 @@
       }
     },
     "babel-plugin-jest-hoist": {
-      "version": "20.0.3",
-      "resolved": "https://registry.npmjs.org/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-20.0.3.tgz",
-      "integrity": "sha1-r+3IU70/jcNUjqZx++adA8wsF2c=",
+      "version": "21.0.2",
+      "resolved": "https://registry.npmjs.org/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-21.0.2.tgz",
+      "integrity": "sha512-iQeYbiM0lr5TCW42qvGkBBoy0rTx6SPppRFT7NwvdnSwNOGMI8+1Oc27SF5wJbCvAY7x5KScP3f0TKtunl+NRw==",
       "dev": true
     },
     "babel-plugin-transform-es2015-modules-commonjs": {
@@ -317,12 +320,12 @@
       }
     },
     "babel-preset-jest": {
-      "version": "20.0.3",
-      "resolved": "https://registry.npmjs.org/babel-preset-jest/-/babel-preset-jest-20.0.3.tgz",
-      "integrity": "sha1-y6yq3stdaJyh4d4TYOv8ZoYsF4o=",
+      "version": "21.0.2",
+      "resolved": "https://registry.npmjs.org/babel-preset-jest/-/babel-preset-jest-21.0.2.tgz",
+      "integrity": "sha512-WyzCFIoU+ga307hPnobHL9eRrZlpZYHQf7M3yOtimAwrLAgNFoSfin7ZVw903+zz81ZLuowZMKWCd0w3PNpAhg==",
       "dev": true,
       "requires": {
-        "babel-plugin-jest-hoist": "20.0.3"
+        "babel-plugin-jest-hoist": "21.0.2"
       }
     },
     "babel-register": {
@@ -558,6 +561,17 @@
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
       "dev": true
     },
+    "codecov": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/codecov/-/codecov-2.3.0.tgz",
+      "integrity": "sha1-rSWixuBELRN0DZ1N27mj4nFDMPQ=",
+      "dev": true,
+      "requires": {
+        "argv": "0.0.2",
+        "request": "2.81.0",
+        "urlgrey": "0.4.4"
+      }
+    },
     "color-convert": {
       "version": "1.9.0",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.0.tgz",
@@ -1067,6 +1081,905 @@
       "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
       "dev": true
     },
+    "fsevents": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-1.1.2.tgz",
+      "integrity": "sha512-Sn44E5wQW4bTHXvQmvSHwqbuiXtduD6Rrjm2ZtUEGbyrig+nUH3t/QD4M4/ZXViY556TBpRgZkHLDx3JxPwxiw==",
+      "dev": true,
+      "optional": true,
+      "requires": {
+        "nan": "2.7.0",
+        "node-pre-gyp": "0.6.36"
+      },
+      "dependencies": {
+        "abbrev": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "ajv": {
+          "version": "4.11.8",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "co": "4.6.0",
+            "json-stable-stringify": "1.0.1"
+          }
+        },
+        "ansi-regex": {
+          "version": "2.1.1",
+          "bundled": true,
+          "dev": true
+        },
+        "aproba": {
+          "version": "1.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "are-we-there-yet": {
+          "version": "1.1.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "delegates": "1.0.0",
+            "readable-stream": "2.2.9"
+          }
+        },
+        "asn1": {
+          "version": "0.2.3",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "assert-plus": {
+          "version": "0.2.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "asynckit": {
+          "version": "0.4.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "aws-sign2": {
+          "version": "0.6.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "aws4": {
+          "version": "1.6.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "balanced-match": {
+          "version": "0.4.2",
+          "bundled": true,
+          "dev": true
+        },
+        "bcrypt-pbkdf": {
+          "version": "1.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "tweetnacl": "0.14.5"
+          }
+        },
+        "block-stream": {
+          "version": "0.0.9",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "inherits": "2.0.3"
+          }
+        },
+        "boom": {
+          "version": "2.10.1",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "hoek": "2.16.3"
+          }
+        },
+        "brace-expansion": {
+          "version": "1.1.7",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "balanced-match": "0.4.2",
+            "concat-map": "0.0.1"
+          }
+        },
+        "buffer-shims": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
+        "caseless": {
+          "version": "0.12.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "co": {
+          "version": "4.6.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "code-point-at": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true
+        },
+        "combined-stream": {
+          "version": "1.0.5",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "delayed-stream": "1.0.0"
+          }
+        },
+        "concat-map": {
+          "version": "0.0.1",
+          "bundled": true,
+          "dev": true
+        },
+        "console-control-strings": {
+          "version": "1.1.0",
+          "bundled": true,
+          "dev": true
+        },
+        "core-util-is": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true
+        },
+        "cryptiles": {
+          "version": "2.0.5",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "boom": "2.10.1"
+          }
+        },
+        "dashdash": {
+          "version": "1.14.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "assert-plus": "1.0.0"
+          },
+          "dependencies": {
+            "assert-plus": {
+              "version": "1.0.0",
+              "bundled": true,
+              "dev": true,
+              "optional": true
+            }
+          }
+        },
+        "debug": {
+          "version": "2.6.8",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "deep-extend": {
+          "version": "0.4.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "delayed-stream": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
+        "delegates": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "ecc-jsbn": {
+          "version": "0.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "jsbn": "0.1.1"
+          }
+        },
+        "extend": {
+          "version": "3.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "extsprintf": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true
+        },
+        "forever-agent": {
+          "version": "0.6.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "form-data": {
+          "version": "2.1.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "asynckit": "0.4.0",
+            "combined-stream": "1.0.5",
+            "mime-types": "2.1.15"
+          }
+        },
+        "fs.realpath": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
+        "fstream": {
+          "version": "1.0.11",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "graceful-fs": "4.1.11",
+            "inherits": "2.0.3",
+            "mkdirp": "0.5.1",
+            "rimraf": "2.6.1"
+          }
+        },
+        "fstream-ignore": {
+          "version": "1.0.5",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "fstream": "1.0.11",
+            "inherits": "2.0.3",
+            "minimatch": "3.0.4"
+          }
+        },
+        "gauge": {
+          "version": "2.7.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "aproba": "1.1.1",
+            "console-control-strings": "1.1.0",
+            "has-unicode": "2.0.1",
+            "object-assign": "4.1.1",
+            "signal-exit": "3.0.2",
+            "string-width": "1.0.2",
+            "strip-ansi": "3.0.1",
+            "wide-align": "1.1.2"
+          }
+        },
+        "getpass": {
+          "version": "0.1.7",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "assert-plus": "1.0.0"
+          },
+          "dependencies": {
+            "assert-plus": {
+              "version": "1.0.0",
+              "bundled": true,
+              "dev": true,
+              "optional": true
+            }
+          }
+        },
+        "glob": {
+          "version": "7.1.2",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "fs.realpath": "1.0.0",
+            "inflight": "1.0.6",
+            "inherits": "2.0.3",
+            "minimatch": "3.0.4",
+            "once": "1.4.0",
+            "path-is-absolute": "1.0.1"
+          }
+        },
+        "graceful-fs": {
+          "version": "4.1.11",
+          "bundled": true,
+          "dev": true
+        },
+        "har-schema": {
+          "version": "1.0.5",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "har-validator": {
+          "version": "4.2.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "ajv": "4.11.8",
+            "har-schema": "1.0.5"
+          }
+        },
+        "has-unicode": {
+          "version": "2.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "hawk": {
+          "version": "3.1.3",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "boom": "2.10.1",
+            "cryptiles": "2.0.5",
+            "hoek": "2.16.3",
+            "sntp": "1.0.9"
+          }
+        },
+        "hoek": {
+          "version": "2.16.3",
+          "bundled": true,
+          "dev": true
+        },
+        "http-signature": {
+          "version": "1.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "assert-plus": "0.2.0",
+            "jsprim": "1.4.0",
+            "sshpk": "1.13.0"
+          }
+        },
+        "inflight": {
+          "version": "1.0.6",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "once": "1.4.0",
+            "wrappy": "1.0.2"
+          }
+        },
+        "inherits": {
+          "version": "2.0.3",
+          "bundled": true,
+          "dev": true
+        },
+        "ini": {
+          "version": "1.3.4",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "number-is-nan": "1.0.1"
+          }
+        },
+        "is-typedarray": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "isarray": {
+          "version": "1.0.0",
+          "bundled": true,
+          "dev": true
+        },
+        "isstream": {
+          "version": "0.1.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "jodid25519": {
+          "version": "1.0.2",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "jsbn": "0.1.1"
+          }
+        },
+        "jsbn": {
+          "version": "0.1.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "json-schema": {
+          "version": "0.2.3",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "json-stable-stringify": {
+          "version": "1.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "jsonify": "0.0.0"
+          }
+        },
+        "json-stringify-safe": {
+          "version": "5.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "jsonify": {
+          "version": "0.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "jsprim": {
+          "version": "1.4.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "assert-plus": "1.0.0",
+            "extsprintf": "1.0.2",
+            "json-schema": "0.2.3",
+            "verror": "1.3.6"
+          },
+          "dependencies": {
+            "assert-plus": {
+              "version": "1.0.0",
+              "bundled": true,
+              "dev": true,
+              "optional": true
+            }
+          }
+        },
+        "mime-db": {
+          "version": "1.27.0",
+          "bundled": true,
+          "dev": true
+        },
+        "mime-types": {
+          "version": "2.1.15",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "mime-db": "1.27.0"
+          }
+        },
+        "minimatch": {
+          "version": "3.0.4",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "brace-expansion": "1.1.7"
+          }
+        },
+        "minimist": {
+          "version": "0.0.8",
+          "bundled": true,
+          "dev": true
+        },
+        "mkdirp": {
+          "version": "0.5.1",
+          "bundled": true,
+          "dev": true,
+          "requires": {
+            "minimist": "0.0.8"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true
+        },
+        "node-pre-gyp": {
+          "version": "0.6.36",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "mkdirp": "0.5.1",
+            "nopt": "4.0.1",
+            "npmlog": "4.1.0",
+            "rc": "1.2.1",
+            "request": "2.81.0",
+            "rimraf": "2.6.1",
+            "semver": "5.3.0",
+            "tar": "2.2.1",
+            "tar-pack": "3.4.0"
+          }
+        },
+        "nopt": {
+          "version": "4.0.1",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "abbrev": "1.1.0",
+            "osenv": "0.1.4"
+          }
+        },
+        "npmlog": {
+          "version": "4.1.0",
+          "bundled": true,
+          "dev": true,
+          "optional": true,
+          "requires": {
+            "are-we-there-yet": "1.1.4",
+            "console-control-strings": "1.1.0",
+            "gauge": "2.7.4",
+            "set-blocking": "2.0.0"
+          }
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-      "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
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       "dev": true,
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diff --git a/package.json b/package.json
index ce33a24..47b4f12 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,8 @@
   "license": "MIT",
   "devDependencies": {
     "@types/jest": "^20.0.8",
-    "jest": "^20.0.4",
+    "codecov": "^2.3.0",
+    "jest": "^21.0.0",
     "ts-jest": "^21.0.1",
     "typescript": "^2.5.2"
   },