Simple Strength Tracker APK

- Added tutorial. It tours the interface and shows the user what is available. This must be completed to use the app. Current users may need to re-install to properly initialize the tutorial.
- Added graphs. It will display the 50 most recently tracked weights as a bar graph. Tap and hold the bars show entry information. After 5 entries, the progress graph will be available.

简单跟踪使用涉及复合动作，如启动力量锻炼程序。跟踪的运动，如深蹲，死升降机，卧推，架空机，及配套的工作。很简单。非常基本的。