chore(package): update nodemon to version 1.15.0

Closes #379

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "karma-mocha-reporter": "2.2.3",
     "karma-phantomjs-launcher": "1.0.4",
     "mocha": "3.3.0",
-    "nodemon": "1.11.0",
+    "nodemon": "1.15.0",
     "phantomjs-prebuilt": "2.1.14",
     "socket.io-client": "2.0.1",
     "watch": "1.0.2",