use goog.net.WebSocket
Implement ping framework
new msg format
Merge pull request #12 from clojurecup2014/cleanup-ws

new msg format
Fix on-close handler.
Merge remote-tracking branch 'refs/remotes/origin/dev' into user-list
fixed a bug that was crashing chrome
Merge pull request #13 from clojurecup2014/crash-prob

fixed a bug that was crashing chrome
Merge remote-tracking branch 'refs/remotes/origin/dev' into user-list
send user list to newly connected users.
Merge branch 'dev'