title: How to generate excel report in rails 3 and send it to email
body: <p>I want to generate excel sheet from data in the database models</p>
  
  <ul>
  <li><p>I want the feature to custom headings</p></li>
  <li><p>I want to download from browser</p></li>
  <li><p>I want to send it to email</p></li>
  </ul>
  
  <p>Is there any gem for doing this requirement</p>