title: Content of create-react-app is not pushed in github
body: <p>I pushed go &amp; react codes to github.</p>
  
  <p>Go codes are successfully commited but React codes are not.</p>
  
  <p>React content is created by <code>create-react-app</code>.</p>
  
  <pre><code>article
  ├ api
  │  └ main.go
  └ client
     └ React content made by create-react-app
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/2sCk1.png" rel="nofollow noreferrer">image of github</a></p>
  
  <p>Here is target github </p>
  
  <p><a href="https://github.com/jpskgc/article" rel="nofollow noreferrer">https://github.com/jpskgc/article</a></p>
  
  <p>I trid following command, but not solved.</p>
  
  <pre><code>error: the following file has staged content different from both the
  file and the HEAD:
      client
  (use -f to force removal)
  $ git rm --cached client -f
  rm 'client'
  
  </code></pre>
  
  <p>Also i tried following command, but issue is not solved</p>
  
  <pre><code>$ rm -rf client/.git
  </code></pre>
  
  <p>contents of client folder is to be commited in github.
  but actually not committed.</p>