title: .gitignore only on local
body: <p>I would like to know how to gitignore files but only on local, without pushing it (because the other people working on the project should not get this update of gitignore of files I added there.</p>
  <p>To be simple, after a git status I only have :</p>
  <pre><code>modified:   .gitignore
  </code></pre>
  <p>because I added my files to ignore to my gitignore but well now I want the line above gone without pushing it.</p>