Merge pull request #2 from firerml/lobby

Lobby
have to push to heroku to see if sockets are fixed...
fixed bullets not appearing across sockets glitch
can't both shoot without glitches...
Removed unessecary code
Merge branch 'master' of github.com:firerml/BattleTanks into lobby
testing glitch fixes on heroku...
Added comments
Merge branch 'master' of github.com:firerml/BattleTanks into lobby
Made connected users list update on connect and disconnect