Fix issue 6: Add random ball release x velocity
Merge pull request #8 from nsue/fix-issue-6

Fix issue 6: Add random ball release x velocity
able to see the ball release movement from other clients
able to see other clients' ball collision with bricks and paddles
client is able to enter mid-game and see the correct position and velocity of other client's ball (only for 2 players)
remote balls are assigned to remotePlayers object, balls are synced between 2 players
removed remoteBall variable from the outermost scope
fixed bug where existing player balls are duplicated
client's remote ball is killed when disconnected, only works for 2 players
fixed bug where player was not removed from remotePlayers when disconnected
implemented don's fix for onremoveplayers, balls are now synced across multiplayers
remove event handler: kill disconnected ball
fixed bug where remotePlayerBall is called in onBrickKillToOtherClients when it is still undefined
uncommented closure on game.js
added createRemoteBall helper
fixed bug: wrong operator
merged with master
resolved conflicts
Merge branch 'view-remote-balls' into view-remote-paddles-and-balls

* view-remote-balls:
  merged with master
  fixed bug: wrong operator
  added createRemoteBall helper
  uncommented closure on game.js
  fixed bug where remotePlayerBall is called in onBrickKillToOtherClients when it is still undefined
  remove event handler: kill disconnected ball
  implemented don's fix for onremoveplayers, balls are now synced across multiplayers
  fixed bug where player was not removed from remotePlayers when disconnected
  client's remote ball is killed when disconnected, only works for 2 players
  fixed bug where existing player balls are duplicated
  removed remoteBall variable from the outermost scope
  remote balls are assigned to remotePlayers object, balls are synced between 2 players
  client is able to enter mid-game and see the correct position and velocity of other client's ball (only for 2 players)
  able to see other clients' ball collision with bricks and paddles
  able to see the ball release movement from other clients
  Fix issue 6: Add random ball release x velocity

Conflicts:
	public/js/game.js