title: MKMapItem error in swift 2.0
body: <p>When I run the following code, I get the error "Cannot call value of non function type 'MKMapItem?'</p>
  
  <pre><code>request.source(MKMapItem.mapItemForCurrentLocation())
  </code></pre>
  
  <p>It worked fine in swift 1.2
  what has changed ?</p>