Added support for gradle

v3.2.15

Add support for gradle

Player stats support

Merge pull request #8 from hashcube/player-stats-api

player stats api added

merged inidividual game play modules into single lib project

Merge pull request #7 from hashcube/google-play-lib-fix

Merging individual modules for googleplay services to single lib project

play service lib upgrade

• upgraded google play services lib to latest one