stompjs http signature支持HTTP签名的Stomp.js用法

支持HTTP签名的Stomp.js用法：

Stomp.overWS = require('stompjs-http-signature').overWS;

var client = Stomp.overWS('ws://127.0.0.1:3000', {

  onerror: function onerr(e) {},

  onclose: function onclose() {},

  sign: {

    algorithm: 'hmac-sha256',

    keyId: 'id',

    key: 'key'

  }

});