title: GITHUB is Pushing the changes with Old Credentials not with New Credentials
body: <p>I have recently configured GITHUB with Visual Studio 2013 Express with Demo GITHub account i.e. for practice purpose.</p>
  <blockquote>
  <p><strong>Good News is that</strong> : I have configured it properly</p>
  <p><strong>But Problem is :</strong></p>
  <p>When I am trying to configure with Genuine Account at GITHub, Visual
  Studio is not pushing the solution at Genuine Repository.</p>
  </blockquote>
  <p>After a-lot of research, it appears that when I am Pushing the solution...
  <strong>Visual Studio is trying to push it by my Demo Git Account.</strong></p>
  <blockquote>
  <p>As my Visual Studio is not asking to insert New User Name and
  Password, I want to know how can I change it.</p>
  <p>I have tried the same of my another system, with actual User name and
  Password...and it is working fine there.</p>
  </blockquote>
  <p><strong>Please suggest, how to remove my Demo User Name and Password and Login via New Credentials.</strong></p>