title: Order Alphabetically and Display By Group
body: <p>I'm trying to display a list of titles from my database in alphabetical order and also in blocks.</p>
  
  <p>I want to output the letter and then include all titles that start with that letter. For example:</p>
  
  <ul>
  <li>A
  <ul>
  <li>Apple</li>
  <li>anotherthing</li>
  </ul></li>
  <li>B
  <ul>
  <li>Bob</li>
  </ul></li>
  </ul>
  
  <p>I know that I can order my results using .order('title'), but I'm not sure what the best way to write the display code is? </p>