Add webpy chat example

[the5fire]

[fload]

Thank You very much for this the5fire! Im still trying to figure it all out and appreciate your example!

[the5fire]

You are welcome @fload .If you need to deal with session between web.py and socketio, maybe you need refer to this: https://github.com/the5fire/wechat/blob/master/src/handlers.py#L265