title: React Native init specific version
body: <p>I upgraded my latest project to React Native 0.19 and instantly the video no longer works. How can I create a new project with a specific version? I want to init a new project at version 0.18.1. I did some google searches but couldn't find anything about this.</p>
  
  <pre><code>$ react-native init newproject --verbose
  </code></pre>
  
  <p>I'm guessing I need to add the word @18.1 in there somewhere but can't get that to work.</p>