Merge pull request #1 from BacooTang/master

test
Merge pull request #2 from BacooTang/master

fix
add OverLayer file and fix res
add OverLayer file and fix res
add pay lib
add Demo code
fix pay lib bug1
修复银联验证bug
Merge pull request #2 from shenvsv/master

Merge pull request #1 from BacooTang/master