title: Add a ActivityIndicator to the bottom of UITableView while loading
body: <p>I want to add a ActivityIndicator to the bottom of my UITableView when the last cell is displayed, while I'm fetching more data, then when the data got fetched hide it.</p>
  
  <p>So I scroll to the bottom -> last row displayed -> spinner starts spinning while data is fetched -> Data fetched, hide the spinner -> new data added to the tableview.</p>
  
  <p>Any tips on how can I achieve this?</p>
  
  <p>Thanks ;)</p>