title: Nodegit: How to modify a file and push the changes?
body: <p>Looked around for an example, but couldn't find one. The documentation is not explained and I could not figure it out.</p>
  
  <p>How to modify a file (README.md for example), create a commit for the modified file and then push the commit to the server ?</p>
  
  <p>Nodegit: <a href="http://www.nodegit.org/">http://www.nodegit.org/</a></p>
  
  <p>Nodegit documentation: <a href="http://www.nodegit.org/nodegit">http://www.nodegit.org/nodegit</a></p>