updated requirejs
made the opening scene its own sort of game thing
fixed up some things for the buttons
renamed the constants file and fixed some constants
created a file for variable values that were in the constants file
got rid of things in the one player class that shouldn't have been there
added a two player class
made a few things nicer in the paddle class
created a file containing all methods for handling input
fixed up game_methods
made the ball class a variable to be returned
made the main file contain the game loop and few other things