Updated README
Updated README

Added a bit more details, described WebSocket support

ctkjose/Ratchet,ratchetphp/Ratchet,krageon/Ratchet,Nek-/Ratchet,b-viguier/Ratchet,vinod1988/Ratchet,Jumplead/Ratchet,lyrixx/Ratchet,naroga/Ratchet,KSDaemon/Ratchet,mbonneau/Ratchet,zjien/Ratchet,sudarshan955/Ratchet,IRlyDontKnow/Ratchet,cesarmarinhorj/Ratchet