chore(package): update ws to version 3.0.0

package.json

@@ -38,6 +38,6 @@
     "mocha": "~3.4.0",
     "pre-commit": "~1.2.0",
     "primus": "~7.0.0",
-    "ws": "~2.3.0"
+    "ws": "~3.0.0"
   }
 }