* Document how to use index.js as entry point (ios)

* android too

* android too (fixed)

* Fix documentation website link

* Update docs

Docs weren't very clear on how exactly to return additional packages, i.e., as a <ReactPackages> list [Line 65]. 
Also changed MyApplication to MainApplication on line 54 (if that is a default and hasn't been changed by the developer).

- compileSdkVersion 25
- buildToolsVersion "25.0.1"

* Initial commit

* Initial commit

* Clean-up title