title: Swift UITableView reloadData() UI behavior
body: <p>We are loading data via REST call:</p>
  
  <pre><code>let task = NSURLSession.sharedSession().dataTaskWithRequest(request, completionHandler: {data, response, error -&gt; Void in
      //Update data store….
      self.tableView.reloadData()
  })
  task.resume()
  </code></pre>
  
  <p>The data in the grid is not shown however.  You have to click on the grid in the simulator - when you do this the data is shown.  What are we missing here to get the data to automatically load without any UI interaction? </p>