service now exposes its connectivity state through the proxy
added service request factory; implemented a login factory method
added and implemented a user class
added and implemented base response parser class and a subclass for login responses
added client class and client event listener interface; client can now login a user and takes care of automatically connecting the service
added a subclass of application that exposes a singleton client instance
Merge branch 'master' of github.com:tmpit/chesshero