title: Expo React-Native iOS Simulator not working
body: <p>Hello I'm facing a problem with Expo React-Native. Whenever I try to launch the iOS Simulator. I get this error:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>Simulator is installed but is identified as 'com.apple.CoreSimulator.SimulatorTrampoline'; don't know what that is.
  Simulator not installed. Please visit https://developer.apple.com/xcode/download/ to download Xcode and the iOS simulator. If you already have the latest version of Xcode installed, you may have to run the command `sudo xcode-select -s /Applications/Xcode.app`.</code></pre>
  </div>
  </div>
  </p>
  
  <p><a href="https://i.stack.imgur.com/h0EJO.png" rel="noreferrer">Screenshot of Expo Results</a></p>
  
  <p>My NPM Version is <strong>6.7.0</strong>
  react-native-cli: <strong>2.0.1</strong>
  react-native: <strong>0.57.1</strong>
  Expo Version <strong>2.11.9</strong></p>
  
  <p>Also I made sure my Command Line tools on Xcode is setup perfectly 
  <a href="https://i.stack.imgur.com/Zk0bd.png" rel="noreferrer">Xcode CommandLineTools</a></p>
  
  <p>Finally, I also tried to run the command <code>sudo xcode-select -s /Applications/Xcode.app</code></p>
  
  <p>Nothing works..</p>