title: Custom image for MKAnnotation
body: <p>I have created an annotation which I'm adding to an MKMapView. How would I go about having a custom image instead of the standard red pin?</p>
  
  <pre><code>@interface AddressAnnotation : NSObject&lt;MKAnnotation&gt; {
      CLLocationCoordinate2D coordinate;
      NSString *title;
      NSString *subtitle;
      MKPinAnnotationColor pinColor;
  }
  @property (nonatomic,retain) NSString *title;
  @property (nonatomic,retain) NSString *subtitle;
  @property (nonatomic, assign) MKPinAnnotationColor pinColor;
  @end
  </code></pre>