Add voice websocket handling

src/client/voice/VoiceConnection.js

@@ -0,0 +1,19 @@
+const VoiceConnectionWebSocket = require('./VoiceConnectionWebSocket');
+const EventEmitter = require('events').EventEmitter;
+
+class VoiceConnection extends EventEmitter {
+  constructor(manager, serverID, token, sessionID, endpoint) {
+    super();
+    this.manager = manager;
+    this.websocket = new VoiceConnectionWebSocket(this, serverID, token, sessionID, endpoint);
+    this.bindListeners();
+  }
+
+  bindListeners() {
+    this.websocket.on('ready-for-udp', data => {
+      console.log(data);
+    });
+  }
+}
+
+module.exports = VoiceConnection;