title: Twitter-bootstrap collapse plugin - how to enable multiple "groups" to be opened?
body: <p>I'm working with the collapse plugin and I'm wondering how I can enable multiple groups to be open at the same time.  In their demo page: </p>
  
  <p><a href="http://twitter.github.com/bootstrap/javascript.html#collapse" rel="noreferrer">http://twitter.github.com/bootstrap/javascript.html#collapse</a></p>
  
  <p>Only one is allowed to be open at a given time.  I suppose this is the expected behavior of accordions, but how can I change it so that opening one group does not collapse the others?  </p>