Port RazzleDazzle to React Native!

[fatuhoku]

Would be really interesting to see how the concepts of interpolators (Animations) and Animators fit into the RN Animation API. The benefits of instantly reloading Javascript resources in dev mode is great — so that you can really rapidly iterate on the parameters of the animation with minimal time.

I found this first-stab at keyframe tweening on RN: https://github.com/kirkness/react-native-tween-animation.