title: React Native: App no longer appears in Simulator
body: <p>Does anyone know how to get a React Native project back into the Simulator?</p>
  
  <p>I clicked on <strong>Hardware</strong>, then <strong>Erase All Content...</strong> with the intent of just running <code>react-native run-ios</code> again but now the app no longer appears inside the simulator.</p>
  
  <p>How do I get the app appearing in the simulator again?</p>
  
  <p>I tried running it from inside of Xcode but I continue to get this error:</p>
  
  <p><code>ld: library not found for -lPods-PROD clang: error: linker command failed with exit code 1 (use -v to see invocation)</code> which is unclear to me because from within the command line I get a successful build.</p>
  
  <p>Now that occurs when I <code>open AppName.xcodeproj</code>, but when I <code>open AppName.xcworkspace</code> and run the build it succeeds, but no simulator opens up.</p>