Create README.md
fixes #1 - create upload plugin
Merge pull request #2 from SheldonJPlankton/google-play-publisher-1

fixes #1 - create upload plugin
fixes #3 - update service account help texts
Merge pull request #4 from SheldonJPlankton/google-play-publisher-3

fixes #3 - update service account help texts
fixes #5 - update pom.xml
Merge pull request #6 from DavidHamm/google-play-publisher-5

fixes #5 - update pom.xml
release 0.1.0