title: Upgrading react native to latest version
body: <p>I have an application which runs on react-native 0.49.3
  I want to upgrade to the latest version which is v0.57.4.</p>
  
  <p>Should I incrementally update it? For example 0.49 -> 0.50 -> 0.51 etc
  Or I can just update it to to the latest version?</p>
  
  <p>Do you suggest using <code>react-native-git-upgrade</code> or <code>rn-diff</code>?</p>