chore(package): update jest to version 22.1.4

Closes #2

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "eslint-plugin-jsx-a11y": "^6.0.2",
     "eslint-plugin-react": "^7.5.0",
     "eslint": "^4.11.0",
-    "jest": "^21.2.1",
+    "jest": "^22.1.4",
     "title-case": "^2.1.1",
     "uglifyjs-webpack-plugin": "^1.0.1",
     "webpack": "^3.8.1"