title: How to get direction from current position to destination using google map IOS6
body: <p>Hi in my application I have integrated google map now i want to give navigation direction from my  current location to destination point please tell me how to achieve this one.</p>
  
  <p>My code.</p>
  
  <pre><code> GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:12.9259
                                                          longitude:77.6229
                                                               zoom:6];
   mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
   mapView.myLocationEnabled= NO;
   self.view = mapView;
   GMSMarker *marker = [[GMSMarker alloc] init];
   marker.position = CLLocationCoordinate2DMake(12.9259, 77.6229);
   marker.title = @"Hello World";
   marker.snippet = @"bangalore";
   marker.map = mapView;
  </code></pre>
  
  <p>The above code i have used to point maker of my destination point in that please tell me how to add the navigation direction to that i have been stuck here for long time please help me out.</p>
  
  <p>Thanks.</p>