title: 'NSURLIsExcludedFromBackupKey' undeclared
body: <p>My iPhone application contains approx 500 MB data. and application will use this data offline. So i mark the folder to do not backup/copy on iTunes. so i am using below url :
  <a href="https://gist.github.com/1999985" rel="nofollow">https://gist.github.com/1999985</a></p>
  
  <p>But it says 'NSURLIsExcludedFromBackupKey' undeclared. and i also tried to used <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>
  but i always return false..</p>
  
  <p>So please let me know how it will works??</p>
  
  <p>Thx</p>