1. README中添加了实物图片 2. 修正了README的目录结构章节 3. README中扩充了tag定义 4. README中添加了version文件的要求 5. 各目录下添加了version文件 6. 添加了doc
The START command following a STOP command can cause misplaced counters. This commit fixes the bug by setting counter variables to their initial value as soon as STOP command reaches.