title: Customize UITableView section border color for each section
body: <p>I am using a UITableView with grouping.  My first group I have built a custom cell with no background color, and I would also like to remove the border around the cell.  How can I do this just for one section?</p>
  
  <p>For my first cell, I would like to set the border/seperator style to [UIColor clearColor].</p>
  
  <p><img src="https://i.stack.imgur.com/77q4O.png" alt="enter image description here"></p>
  
  <p><strong>EDIT:</strong> Apple does this in their contacts app, and I wanted to design something similar.</p>