[WAMP] Store sessionId in Connection
[WAMP] Store sessionId in Connection

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