updating the readme

Author: jonrohan

README.md

@@ -5,3 +5,14 @@ Snippets for making documenting your code super fun!
 Current support:
 
 - [KSS](https://github.com/kneath/kss)
+
+`//` completes in `scss`, `css`, and `less`
+
+```css
+// A description of the whole styling group.
+//
+// :hover             - Subtle hover highlight.
+// .class-name        - a class description.
+//
+// No Styleguide
+```