title: Use and switch the rails command line from master to stable?
body: <p>I would like to try Rails and the <code>rails</code> command line synched on the git <code>master</code> branch. At the same time I would like to be able to easily update the rails gems to the latest master and also to switch easily to the stable branch to work on existing projects.</p>
  
  <p>Knowing that I'm using rbenv what would be the easiest and more practical solution? Using gem sets?</p>
  
  <p>Thanks.</p>