title: Optimize Font Awesome for only used classes
body: <p>I am using Font Awesome Sass file <a href="https://github.com/FortAwesome/Font-Awesome/blob/master/sass/font-awesome.sass" rel="noreferrer">https://github.com/FortAwesome/Font-Awesome/blob/master/sass/font-awesome.sass</a> to make it <strong>_font-awesome.sass</strong> so I can <code>@import</code> in my Sass project. I am also using <a href="http://middlemanapp.com/" rel="noreferrer">http://middlemanapp.com/</a> to convert <strong>Sass</strong> to <strong>Css</strong>. Questions:</p>
  
  <ol>
  <li><p>Is there a way to bring only <strong>used icon classes</strong> into my converted .css? Because right now it carried all classes from <strong>_font-awesome.sass</strong></p></li>
  <li><p><strong>BONUS:</strong> Is it possible to <strong>recompile</strong> the fonts somehow with <strong>used icon classes</strong> to make it smaller on production use?</p></li>
  </ol>
  
  <p>If I can get some tips on #1 above, that would be awesome enough.</p>
  
  <p>Thanks.</p>