title: Add an xcode project in a repository tfs
body: <p>I'm trying to connect to a repository tfs a written project with xcode 5.
  I'm using git-tf and it seems that the configuration in xcode 5 is correct.
  The problem that feedback occurs when authentication with the TFS repository.
  In xcode 5 open preferences and go in the accounts. I enter the login information with the url and in response I Access denied credentials are incorrect.</p>
  
  <p>What am I doing wrong?</p>