Merge pull request #15 from lkrenitsky/develop

Created object stubs for Game object
efforts from in class 3/25/12
Merge pull request #16 from zbtirrell/in-class

efforts from in class 3/25/12
Added position tracking and collision detection

Added array for position tracking and adapted board.place and
board.remove to take advantage of it. Also added lives to mouse, a
game.close to stop all setInterval items (cats) and a conditional that
prevents moving once you've run out of lives.
Merge pull request #17 from Camwyn/develop

Added position tracking and collision detection
Added all objects as stubs
Merge pull request #18 from Camwyn/develop

Added all objects as stubs