title: my react native project does not contained any app.xcworkspace file in iOS
body: <p>I want to run my react native app. when I run it by Xcode it shows something linker error and solution of that finds running by xcworkspace file. </p>
  
  <p>something happens when I run this by react-native run-ios command </p>
  
  <p>And in my project this file is not there in iOS folder.</p>
  
  <p>react-native version: 0.60.4</p>