Summary:
Some tools, like `react-native-cli` only works correctly if the `android` and `iOS` projects respect the react native folders structure. Usually, when you are integrating react native with other existing projects, that is not the case. This note will help the developers to identify and avoid potential issues.
Closes https://github.com/facebook/react-native/pull/10480
Differential Revision: D4056046
Pulled By: JoelMarcey
fbshipit-source-id: ef8d75b338616b2319f7e0418a7bfcfa1a0604dc