title: ios adding dropbox like app functionality in my own app
body: <p>I have a app, in which I want the user to allow to download pictures from its dropbox account.
  I am familiar with downloading and displaying the files and folder. My problem is, I want to give the user folder like option to navigate in a table view, as we see in dropbox ios app and web interface. I am having trouble to how to handle view controllers, which view controller for main dropbbox interface, then when user clicks on an folder I want him to navigate to the contents of next folder, and having an option to come back, but there could be n number of levels it can go in downward. Please help</p>