Fix Broken React Native Projects in Xcode 10

In this video we'll learn how to fix an issue where you're unable to build a React Native app in Xcode 10.

If you're a few versions behind the latest release (v0.57 at the time of recording) and recently upgraded to Xcode 10 the default build system changed, which broken some things.

If you're still having issues after trying the suggestions in this video this Github thread is a wealth of knowledge: https://github.com/facebook/react-native/issues/20774