How to use react-native link and CocoaPods

Issue #476

React Native comes with a default React library, and most CocoaPods libraries for React Native has React as a dependency pod, which causes the conflict

• https://github.com/react-native-community/react-native-svg/issues/621
• https://stackoverflow.com/questions/45296994/difference-between-react-native-link-and-cocoapods
• https://github.com/onmyway133/notes/issues/486
• https://github.com/facebook/react-native/pull/23563