title: Github Authentication Failed - ... GitHub does not provide shell access
body: <pre><code>$ git remote add origin git@github.com:lut/EvolutionApp.git
  fatal: remote origin already exists.
  
  $ git push -u origin master
  fatal: 'EvolutionApp' does not appear to be a git repository
  fatal: Could not read from remote repository.
  
  Please make sure you have the correct access rights
  and the repository exists.
  </code></pre>
  
  <p>My keys were added succesfully</p>
  
  <pre><code> $ ssh -T git@github.com
   Hi lut! You've successfully authenticated, but GitHub does not provide shell access.
  </code></pre>
  
  <p>The Github article <a href="https://help.github.com/articles/generating-ssh-keys/">https://help.github.com/articles/generating-ssh-keys/</a> says that "Shell access" should not be an issue? What could the problem be?</p>