Web-stomp issue in rabbitmq LTS

[iamvasim786]

https://github.com/beevelop/ng-stomp/blob/a20f132bc6df94f73b6a2f9fafdd0a440a6848c5/src/ng-stomp.js#L31

Please update above new SockJS() to new WebSocket() because new rabbitmq version its not connected using new SockJS() and also update endpoint to ws://127.0.0.1:15674/ws

this.sock = new WebSocket(endpoint, null, sockjsOpts)

[beevelop]

Feel free to open a respective PR.