title: Rails draw progress bar instead of integer value
body: <p>I'm now using ActiveAdmin as the admin panel for Rails website. On index page of Teams, it shows team's score as integer.</p>
  
  <p><img src="https://i.stack.imgur.com/gUB36.png" alt="Scores are shown as integer"></p>
  
  <p>Instead of showing the integer, is there any way to show the static progress bar, scale of 100? </p>
  
  <p>Sorry for my poor english. Thanks for your help.</p>