title: Add MKAnnotation in UIView, not in MKMapView
body: <p>It's possibile to add an <strong>mkannotation</strong> in a <strong>uiview</strong>.</p>
  
  <p>I don't have (<strong>and I don't want</strong>) a <em>mkmapview</em>, but I want the annotation with the callout in a uiview.</p>
  
  <p>How can I add this point (<em>with callout</em>) on screen?</p>
  
  <p>Something like:</p>
  
  <pre><code>MKAnnotationPosition newPos;
  newPos.center.x = 200;
  newPos.center.y = 250;
  </code></pre>
  
  <p>to positioning the annotation in uiview.</p>
  
  <p>thanks,
  alberto.</p>