title: PhoneGap / Cordova 1.5 iOS "do not back up" file attribute
body: <p>According to the developer documentation on Apple's website: <a href="https://developer.apple.com/library/ios/#qa/qa1719/_index.html" rel="nofollow">https://developer.apple.com/library/ios/#qa/qa1719/_index.html</a>  </p>
  
  <blockquote>
    <p>Starting in iOS 5.0.1 a new "do not back up" file attribute has been introduced allowing developers to clearly specify which files should be backed up. (com.apple.MobileBackup)</p>
  </blockquote>
  
  <p>I'm wondering if this is supported in PhoneGap / Cordova, as I want to be able to store some offline data (data that can be downloaded or otherwise recreated, but that the user expects to be reliably available when offline) that is not backed up on iCloud.</p>
  
  <p>Persistance is clearly documented (LocalFileSystem.PERSISTENT - <a href="http://docs.phonegap.com/en/1.5.0/phonegap_file_file.md.html#LocalFileSystem" rel="nofollow">http://docs.phonegap.com/en/1.5.0/phonegap_file_file.md.html#LocalFileSystem</a>) on the PhoneGap website, but there seems to be no way of ensuring a saved file is not backed up to the iCloud.</p>