title: iOS GoogleMaps SDK - animateToCameraPosition animation finished handler?
body: <p>Currently I am using the GoogleMaps SDK for iOS for various operations. 
  When calling </p>
  
  <pre><code>[self.googleMapsView animateToCameraPosition:[GMSCameraPosition 
                              cameraWithLatitude:LATITUDE
                                       longitude:LONGITUDE
                                            zoom:ZOOM]];
  </code></pre>
  
  <p>is there a completion handler to determine wether the animation finished or not?</p>
  
  <p>Of course I get with the GMSMapViewDelegate updates about the cameraPosition but how should I check if the animation finished?</p>
  
  <pre><code>- (void)mapView:(GMSMapView *)mapView 
  didChangeCameraPosition:(GMSCameraPosition *)position;
  </code></pre>