websocket-server unpublished

this is critical for any existing installations of pintura - particularly if they are using continuous deployment.

https://www.npmjs.org/package/websocket-server

> This package has been unpublished.
>
> Description	A WebSocket Server for node.js, 90-100% spec compatible.
> Unpublished By	miksago
> Unpublished On	Wed Sep 24 2014 12:00:42 GMT+0000 (UTC)

it looks like it might not be too much work to change to socket.io so i'm going to take a crack at it and hope to have something by the end of today.  @kriszyp let me know asap if you'd rather use another lib or if you've already worked up something previously that's ready to use.