title: How to upgrade a React project built with create-react-app to the next create-react-app version?
body: <p>I have a React project built with <code>create-react-app</code> 1.5. I would like to get the features of <code>create-react-app</code> 2.0 for my React project.</p>
  
  <p>Specifically I would like to use this: <a href="https://github.com/facebook/create-react-app/pull/3909" rel="noreferrer">https://github.com/facebook/create-react-app/pull/3909</a></p>