Merge pull request #12 from berna228/Daniel

Merge to update licenses to Apache V2, refactoring to io.helio.android, and app name change to Helio
Added Thread, made UI look prettier
Removed unused code, added Battery Reader (Not working fully)
Added battery level listener
Merge pull request #14 from berna228/Yaro

Merge to Master from Yaro
Merge pull request #15 from berna228/master

Merge to Daniel from Master