Modified IOWebSocket to comply with the new WebSocketClient interface.

[mayconbordin]

The WebSocketClient interface has changed, so the socket.io client wasn't working. I've made some changes to IOWebSocket so that it complied with the interface.

I've also made some changes in the error reporting, so that when programming to Android I can implement another way to report errors (LogCat), instead of printing the stack trace. Maybe there is a more elegant way to log with both Android and normal Java apps, maybe Log4j with something else.

Finally, I've created a simple chat client using Swing just to show how to work with this library. I've also included the node application.