Summary:
If this is the way to go, I'll update the rest of the document :)
> Explain the **motivation** for making this change. What existing problem does the pull request solve?
- Update basic usage to latest ES6-7 syntax
- Provide a working simple example of using AppState
Closes https://github.com/facebook/react-native/pull/11879
Differential Revision: D4443891
Pulled By: hramos
fbshipit-source-id: 87433e994ee56050e24a3853f24a94b54f5586d4