Play again

There are now two buttons at the bottom center of the game over page, Play Again and Home.  Play Again will refresh the page which will load a new game with the deck the player just played.  Home will bring the user to the root page of the app.  Next steps: The buttons change color slightly when the player hovers their mouse over the buttons.  Need to add two more functions to game_over.js and create two new images of the buttons that have a different shade of blue.  Ex: http://examples.phaser.io/_site/view_full.html?d=buttons&f=action+on+click.js&t=action%20on%20click