title: How to bundle (zip/tar/?) sets of files so that an iPhone app can expand them?
body: <p>How can I bundle up an arbitrary directory of files, preserving their hierarchical paths so that they can be expanded by an iPhone app?  </p>
  
  <p>More background on what I am trying to do:</p>
  
  <p>I would like to add dynamic content updates for my iPhone app.  I'll make a bundle of html files available on a server, and I'd like the app to check periodically for a new .tar/.zip file, download it, expand it, and then access the new content.</p>