Summary:
Currently, DevTools only work under ios (although this is undocumented!),
because the JavaScriptEngine initialization process skips setupDevTools() on
android.
DevTools work fine with Android, as tested on 0.26, 0.27, and 0.28 using
Nuclide's inspector.
For reference, the relevant issue on react-devtools.
Closes https://github.com/facebook/react-native/pull/8095
Reviewed By: bestander
Differential Revision: D3492788
Pulled By: andreicoman11
fbshipit-source-id: 1eda9196d7125da19a8d7baaab22b61b744ca629