Add several libraries and categories

Location category in free apps.
[Android-ReactiveLocation](https://github.com/mcharmas/Android-ReactiveLocation) - library wrapper around Google Play Services location API to RxJava Observables
[ChromaHashView](https://github.com/MichaelEvans/ChromaHashView) - password visualization in EditText
[Bolts-Android](https://github.com/BoltsFramework/Bolts-Android) - task management and background processing framework
[Madge](https://github.com/JakeWharton/madge) - bitmaps debugging tool
[LoopingViewPager](https://github.com/imbryk/LoopingViewPager) - View Pager with infinite scrolling