Summary:
see also: eb3360b02a (commitcomment-19042340)
commit eb3360b02ab82d20bc3c3f38f543b0d742598346 recently break some third libraries that was (weakly) relying on traversing `animatedNode.refs.node` to get the original node of the decorated (animated) component (at least 2 libs: gl-react-native and react-native-material-kit).
Instead of now doing `animatedNode._component` (that might later break again), getNode() is a more 'public' solution for these third party.
as you expose a way to create an animated component (`createAnimatedComponent`) you sometimes still want a way to get the reference.
That way, third party components can continue providing some extra native methods to the animated version.
Closes https://github.com/facebook/react-native/pull/9944
Differential Revision: D3885973
Pulled By: foghina
fbshipit-source-id: 43ffdbfe7f9c52f5a1689e6a9a4052d4973f5c5f
19d0429a76