Adding Modified PSTS lib.

[DonLiangGit]

Manually edit the build and compile version,
delete the apply from: 'https://raw.github.com/chrisbanes/gradle-mvn-push/master/gradle-mvn-push.gradle' in the red lib build.gradle.

Reference:
http://stackoverflow.com/questions/21950664/actionbar-gradle-group-for-class-org-gradle-api-error