Merge pull request #345 from gpbl/greenkeeper/mocha-3.4.1

Update mocha to the latest version 🚀

Author: gpbl

package.json

@@ -96,7 +96,7 @@
     "istanbul": "1.1.0-alpha.1",
     "jsdom": "10.1.0",
     "lint-staged": "3.4.1",
-    "mocha": "3.3.0",
+    "mocha": "3.4.1",
     "mocha-circleci-reporter": "^0.0.2",
     "mocha-junit-reporter": "^1.13.0",
     "moment": "2.18.1",