Update socket.js

Add `raw` functionality to wrapped socket, so that custom socket functions can be accessed. The Sails.js framework adds additional methods to sockets via its sails.io.js file.

>  This file allows you to send and receive socket.io messages to & from Sails 
> by simulating a REST client interface on top of socket.io.

Access to these custom methods are required to use sockets with Sails.