Summary:This adds deprecation warnings that correspond to what React 0.14 did for the web.
I.e. `React.render` -> `ReactNative.render` but also `ReactNative.createClass` -> `React.createClass`.
This hopefully means that it will become easier and more idiomatic to write components that are decoupled from the react-native package.
It will be clear when you take on react-native as a dependency such as when using findNodeHandle.
This codemod is a little more invasive for React Native because the common stuff often used the `react-native` package. For web only the uncommon stuff needed to move.
Reviewed By: spicyj
Differential Revision: D3148860
fb-gh-sync-id: d87628d2089a2e012ad6ad50dd0a20ccec5e6c45
fbshipit-source-id: d87628d2089a2e012ad6ad50dd0a20ccec5e6c45
Sebastian Markbage