Fix demo project crashes

In demo project, if you click on either "Normal Picker" or "Limited Picker" button app crashes with log:
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Could not load NIB in bundle: 'NSBundle </var/mobile/Applications/F5CEC86B-948D-4869-84D1-2BD6C1431655/ELCImagePickerDemo.app> (loaded)' with name 'ELCAlbumPickerController''

This kind of issues has been fixed.