Moved ora to dev dependencies

Ora is used to display a spinner in the console while the build is performed.

Author: xbill82

package.json

@@ -28,11 +28,11 @@
     "bluebird": "3.4.1",
     "bufferutil": "^1.2.1",
     "node-uuid": "1.4.7",
-    "ora": "^0.3.0",
     "utf-8-validate": "^1.2.1",
     "ws": "^1.1.1"
   },
   "devDependencies": {
+    "ora": "^0.3.0",
     "webpack": "^1.13.1",
     "eslint": "^2.10.2",
     "eslint-friendly-formatter": "^2.0.6",