fixed websockets test
stopping server message was removed
fixed dependency hell for Ruby 1.9.2
Merge pull request #277 from marcoow/master

- guard ~> 2.0 depends on listen ~> 2.0 which requires Ruby 1.9.3 so that breaks the build fr 1.9.2
- the web socket test expects the data directly while #receive returns a WebSocket::Frame::Incoming::Client (probably due to a change in em-websocket I guess?)
- the "stopping server..." log message seems to have been removed so I removed the assertion