Added app integration flow drawing

README.md

@@ -111,4 +111,10 @@ The implementation of the example controller looks like follows:
     // Callback for engine.queueUserExitedDelegate 
     NSLog(@"User has left the queue");
 }
-```
+```
+As the App developer your must manage the state (whether user was previously queued up or not) inside the apps storage.
+After you have received the "On Queue Passed callback", the app must remember this, possibly with a date / time expiration.
+When the user goes to the next page - you check this state, and only call QueueITEngine.run in the case where the user did not previously queue up.
+When the user clicks back, the same check needs to be done.
+
+![App Integration Flow](https://github.com/queueit/ios-webui-sdk/blob/master/App%20integration%20flow.PNG "App Integration Flow")