به روز شده در 02/04/2016
v 1.9: fixed a bug that caused a crash when rotating the device.
v 1.8: added an indicator to keep track of "who goes first"
v 1.3: added menu options to change the default starting life for different types of play.
v 1.2: added the ability to pause the timer.
added background image and other graphics.
v 1.1: fixed a bug that caused a crash when the screen rotated.
fixed a bug that caused a crash when the app exited.
