Merge pull request #45 from msgflo/greenkeeper/mocha-5.0.0

Update mocha to the latest version 🚀

Author: bergie

package.json

@@ -28,7 +28,7 @@
     "grunt-contrib-coffee": "^2.0.0",
     "grunt-mocha-test": "^0.13.2",
     "grunt-shell-spawn": "^0.3.1",
-    "mocha": "^4.0.0",
+    "mocha": "^5.0.0",
     "mqtt": "^2.7.1"
   },
   "keywords": [],