title: react-native statusBar with expo on iOS
body: <p>I was trying to change the color of the <code>statusBar</code> on my react-native app.</p>
  
  <p>I am working with <code>expo</code> and on their documentation they are just specifying to add :
  <code>"androidStatusBar": {
        "backgroundColor": "#2E1D59"
      }</code></p>
  
  <p>that works fine with android, but they did not mention how to do so with iOS statusBar.</p>
  
  <p>Anyone has an idea about this ?</p>