title: How can I add/remove a cell from grouped section uitableview?
body: <p>How can I programmatically add or remove a cell from a grouped section?</p>
  
  <p>I created a grouped tableview using static cells in storyboard.  Inside the storyboard I set the number of rows using the Attribute Inspector panel.  For example, for section 1, I define 3 rows.  Then using an NSMutableArray of 3 items, I can properly load values into each section correctly at startup.  </p>
  
  <p>I ultimately want the ability to add/remove a cell at runtime.  That part hasn't been coded yet but to  simulate adding a new cell scenario, I added a new item to the array in the code but did not increase the row count for the section in the Attribute Inspector panel.  I had hoped that I would not need to make any other changes to accomodate the new item since inside the numberOfRowsInSection method, I'm returning the count of the array for the specific section.</p>
  
  <p>This is the error message that I get when I re-ran the code:</p>
  
  <p><strong>* Terminating app due to uncaught exception 'NSRangeException', reason: '*</strong> -[__NSArrayI objectAtIndex:]: index 3 beyond bounds [0 .. 2]'</p>
  
  <p>Apparently I need to somehow specify an additional row count.  Can anyone shed some light on how I can do this at runtime?  Thanks.   </p>