title: I'm always remain logged into facebook from within app
body: <p>I'm using an <code>FBSDKLoginButton</code>. The problem is that I'm always logged in to facebook within the app. Even if I close the app, and go to the facebook app... ensure I'm logged out there... whenever I open my app and get to the log in button, it is greyed out with "Log out" written... not only that but I'm able to present an <code>FBSDKShareDialog</code> and <code>post</code> to facebook... even though the facebook app says I'm logged out.</p>
  
  <p>How do terminate my app's facebook access? Right now all I can do is completely delete the app from the iphone to terminate access.</p>
  
  <p>Appreciate any help.</p>