title: Authentication Failure on Github even after adding SSH key
body: <p>I get fatal:Authenication Failure when I try to push code to my repo. I've added the public key on my github account as well. When I do :
      <code>ssh -i git@github.com</code>
  <br>I get 
      <code>Hi amangupta052! You've successfully authenticated, but GitHub does not provide shell access.</code></p>
  
  <p>Can anyone help?
  Thanks</p>