在brew中实现秒表的功能，按键控制秒表的开始和停止，在手机上测试成功~！-brew in achieving stopwatch function keys control the stopwatch to start and stop the phone test successful ~!

用brew 实现的stopwatch功能。用softkey控制时间的开始和停止。也实现了lap功能-Achieved with stopwatch function brew. Softkey control with start and stop time. Also achieved a lap function

brew的stopwatch代码，基本功能实现，略有欠缺。请各位高手指点迷津-code for stopwatch with brew