Revert "ReadMe"

This reverts commit b2757f15282a1a91461eba16920c46b9ce4eb692.
Revert "Fixed a crash bug and added a screenshot"

This reverts commit 9992b0a6f2b3c57f23cfd2aa90ad19afe411be4f.
Revert "Delete unuseful files"

This reverts commit 2794ce2df2d1fd47f057a2d418fe929647877abf.