chore(package): update babel-jest to version 22.1.0

Closes #34

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
   "author": "Luis Flores <me@luisflores.mx> (http://luisflores.mx/)",
   "license": "MIT",
   "devDependencies": {
-    "babel-jest": "^20.0.0",
+    "babel-jest": "^22.1.0",
     "babel-preset-es2015": "^6.24.0",
     "babel-preset-stage-2": "^6.22.0",
     "codecov.io": "^0.1.6",