title: How to use code completion on SCSS files in IntelliJ IDEA 10.5?
body: <p>In general SCSS files are CSS files with some special features. When i want to edit a *.sass file in my project i noticed that IntelliJ knows that file type but there is no code completion at all. I know IntelliJ has code completion for CSS files.</p>
  
  <p>Just going to "IDE Settings" / "File Types" / "Cascading style sheets" and adding "<em>.sass" and "</em>.scss" to it, brings auto completion to this file for normal CSS.</p>
  
  <p>Is there a way to enable (add) all the special features of sass to the IntelliJ auto completion for functions like "lighten()" etc., too? </p>