Summary:
The documentation currently list a few but not all of the steps required. This changes completes that list of required project changes.
This addresses #5612
Closes https://github.com/facebook/react-native/pull/7985
Differential Revision: D3414576
Pulled By: nicklockwood
fbshipit-source-id: 2c7ea6598ee4cd8b6945d9bb229bed5b592a68f6