删除MyPlayer文件夹以便使用subtree。
Squashed 'MyPlayer/' content from commit ea977af

git-subtree-dir: MyPlayer
git-subtree-split: ea977afa93722893e59a31736d353566a40784f5
Merge commit 'd24d89857193bbd2ee0f7c1f7424a180086b234b' as 'MyPlayer'