Update Subclass Form in README to pass Reel::Websocket instead of Reel::Request

[travisvalentine]

I'm trying celluloid/reel for the first time and was trying to get things set up given the examples. However I was getting errors using the example in the Subclass Form when calling:

sock << "Hello everyone out there in WebSocket land!"

I realized this is due to attempting to call write on a Reel::Request as opposed to a Reel::Websocket. It could very well be that I'm not doing things properly, but this adjustment seems to have done the trick for me.

[travisvalentine]

Actually, this may be my fault with implementation. Looks like the Reel::Connection being sent has :headers as its response_state, so it makes sense as to why I'm getting my not in chunked body mode error while attempting to write. I'll ask in the google group and close this for now.