Example client code typo

[hezhao]

should close rtc.createStream() function.

<script src="/webrtc.io.js"></script>
<script>
  rtc.createStream({"video": true, "audio":true}, function(stream){
    // get local stream for manipulation
  });
  rtc.connect('ws://yourserveraddress:8001', optionalRoom);
//then a bunch of callbacks are available
</script>