Hotfix Release v0.20.1

Merge pull request #5 from ridsatrio/hotfix-0.20.1

Pull hotfix-0.20.1 from Ridho Hadi Satrio:
 "The request codes used within the Permissions class previously used
  bit-flag-styled numbering (0x00000000, 0x00000001, etc) instead of
  normal integers. That turned out to be problematic since Android
  would only accept lower 8 bits integer (less than 255) as request
  codes.

  This hotfix will address the issue by changing those bit-flag-styled
  codes into normal normal integers instead."

Initial Release

First public availability via JCenter Maven repository.