chore(package): update dependencies

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -18,12 +18,12 @@
   ],
   "dependencies": {},
   "devDependencies": {
-    "amqplib": "^0.4.2",
-    "chai": "~1.9.0",
+    "amqplib": "^0.5.1",
+    "chai": "~3.5.0",
     "coffee-script": "^1.8.0",
-    "mocha": "~1.21.0",
-    "mqtt": "1.4.x",
-    "msgflo": "^0.8.1"
+    "mocha": "~3.2.0",
+    "mqtt": "~2.2.1",
+    "msgflo": "^0.9.5"
   },
   "keywords": [],
   "bin": {},