Merge pull request #14 from flowbased/greenkeeper/mocha-4.0.0

Update mocha to the latest version 🚀

Author: jonnor

package.json

@@ -36,6 +36,6 @@
     "coffee-script": "^1.10.0",
     "js-yaml": "~3.9.0",
     "fbp": "^1.5.0",
-    "mocha": "^3.2.0"
+    "mocha": "^4.0.0"
   }
 }