title: FBSession: No AppID provided; either pass an AppID to init, or add a string valued key
body: <p>When I open a FBSession (FB SDK 3.0), I get this error:</p>
  
  <pre><code>FBSession: No AppID provided; either pass an AppID to init, or add a string
  valued key with the appropriate id named FacebookAppID to the bundle *.plist
  </code></pre>
  
  <p>I know I can add a value for FacebookAppID in the .plist, but what method should I use to init the FBSession with an AppId? I have tried using [FBSession setDefaultAppID] but that doesn't seem to do it.</p>