//members
private 3 JButtons, rules, play, and exit.  One clicks rules to see the rules
	of the game, play to play a game of Craps, and exit to quit the program.
private Craps game, an object of the game Craps.
private int numberOfGames, how many games have been played
private int numberOfWins, how many wins there were of the number of games played

	This class extends a JFrame and implements the ActionListener Interface
//methods
constructor
PRECONDITION:	none
INPUT:		none
PROCESS:	This creates the interface which extends a JFrame and implements
		an ActionListener.  One creates the 3 JButtons, puts them in
		the JFrame, and adds them to the actionListener (this).  It
		also instantiates the object game, and initializes both
		numberOfGames and numberOfWins to be zero.
OUTPUT:		none
POSTCONDITION:	The 3 JButtons have been created and are being listened to by
		the ActionListener.  The game has been created, and the
		numberOfGames and numberOfWins are set to zero.

actionPerformed
PRECONDITION:	none, except one of the 3 JButtons have been clicked
INPUT:		ActionEvent, a clicking of one of the 3 JButtons
PROCESS:	If the JButton rules has been clicked, it calls the method
		rules of game.  If the JButton plays has been clicked, it
		calls the method play of games.  It increments the numberOfGames
		by one, and if plays returns a value of true, it also increments
		the numberOfWins by one.  If the JButton exit has been clicked,
		it outputs, via a JOptionPane.showMessageDialog, the number of
		wins and number of games played, and exits the program via a
		System.exit(0).
OUTPUT:		none
POSTCONDITION	numberOfGames and numberOfWins could have been modified.  One
		of the methods of game might have been called.