删除MyPlayer目录，准备使用subtree方式管理MyPlayer项目。
Add 'MyPlayer/' from commit '2ceab98b6b6fc7192190ea5df9145cc6f708e68d'

git-subtree-dir: MyPlayer
git-subtree-mainline: 2ceab98b6b6fc7192190ea5df9145cc6f708e68d
git-subtree-split: 2ceab98b6b6fc7192190ea5df9145cc6f708e68d