title: How to unlink or log out of dropbox account on iOS
body: <p>I am using Dropbox in my own app. Once I login, the tableview is displayed and every time I load that view, I go straight to the table view. But, my concern is, suppose different people are using this application, they  might want to login with their own accounts so I want to have an option to logout. 
  How do I do that?</p>