Merge pull request #14 from msgflo/greenkeeper/mocha-5.0.0

Update mocha to the latest version 🚀

Author: bergie

package.json

@@ -26,6 +26,6 @@
   "devDependencies": {
     "chai": "^4.0.2",
     "fbp-spec": "^0.5.0",
-    "mocha": "^4.0.0"
+    "mocha": "^5.0.0"
   }
 }