title: Find if device is pointing in the right heading / direction?
body: <p>I would like to find the distance to a location and which direction the device is heading in relation to that location. I've got the distance working but cant work out how to find the which way the location.</p>
  
  <pre><code>_theLocation = [[CLLocation alloc]initWithLatitude:-41.561004 longitude:173.849030];
  
  - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
  {
      CLLocationDistance meters = [newLocation distanceFromLocation:_theLocation] * 0.000621371192;
  }
  
  - (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading
  {
      NSString *str = [NSString stringWithFormat:@"Heading = %.f", newHeading.trueHeading];  
  }  
  </code></pre>
  
  <p>Is it possible to find the heading to <code>_theLocation</code> from our location?</p>