Added board.js
Streamlined definition of board variable.
Added definition of line color for lines drawn on board.
Added dice.js and relegated initializing the _CRAPS.dice object to craps.js instead of index.html.
Added utils.js and moved the random number generation function to that file.
Added crapsDice.js and relegated the CrapsDice class to this file.
Added crapsBets.js and reorganized the code to make a little more sense.
Added crapsPlayers.js and a PlayerManager class definition.
Moved getRandomNumber() to the UTILS class.
Added players.js and crapsPlayers.js and simplified creating new players.