Summary:
The animation shown in the UIExplorer example for NavigationExperimental's NavigationHeader is not working correctly. Due to an incomplete use of the `renderTitleComponent()` callback, interpolation is not working correctly in this example.
Even if the animation error is subtle, since the examples are followed by developers quite closely, the bug may multiply if not corrected in the sample code.
This is a really *tiny* modification that fixes that particular animation.
Closes https://github.com/facebook/react-native/pull/9067
Differential Revision: D3669140
Pulled By: javache
fbshipit-source-id: 6dab36a9132da2f704e9a074ae26e744c3420cde
Summary: Move all JS to a js/ subfolder so we get some overview of this folder again.
Reviewed By: bestander
Differential Revision: D3542598
fbshipit-source-id: 7637133fe4152f4d39e461b443b38510272d5bc8
