issue #45, deliver the event which peer joined/left a group
issue #45, deliver the event which peer joined/left a group

zeromq/zyre,c-rack/zyre,twhittock/zyre,awynne/zyre,hintjens/zyre,awynne/zyre,trevorbernard/zyre,awynne/zyre,trevorbernard/zyre,hintjens/zyre,keent/zyre,keent/zyre,Asmod4n/zyre,twhittock/zyre,awynne/zyre,zoobab/zyre,twhittock/zyre,awynne/zyre,zoobab/zyre,twhittock/zyre,trevorbernard/zyre,zeromq/zyre,zeromq/zyre,zoobab/zyre,zeromq/zyre,hintjens/zyre,hintjens/zyre,c-rack/zyre,Asmod4n/zyre,trevorbernard/zyre,zeromq/zyre,Asmod4n/zyre,Asmod4n/zyre,hintjens/zyre,awynne/zyre,twhittock/zyre,keent/zyre,hintjens/zyre,zeromq/zyre,keent/zyre,zoobab/zyre,twhittock/zyre,zoobab/zyre,zoobab/zyre,Asmod4n/zyre,Asmod4n/zyre,trevorbernard/zyre,zoobab/zyre,hintjens/zyre,c-rack/zyre,c-rack/zyre,twhittock/zyre,keent/zyre,c-rack/zyre,hintjens/zyre,trevorbernard/zyre,keent/zyre,c-rack/zyre,zeromq/zyre,twhittock/zyre,zoobab/zyre,zeromq/zyre