chore(package): update mocha to version 5.0.1

Closes #30

Author: greenkeeper[bot]

package.json

@@ -16,7 +16,7 @@
     "amqplib": "^0.5.1",
     "chai": "^4.1.2",
     "coffee-script": "^1.8.0",
-    "mocha": "^4.1.0",
+    "mocha": "^5.0.1",
     "msgflo": "^0.10.0",
     "mqtt": "^2.15.0"
   },