extended frontend instructions on frontend scss

Author: Jeroen Gerits

README.md

@@ -79,7 +79,7 @@ After pulling down changes, ssh into the vagrant box and run the update_environm
 Because we keep the generated / minified css out of the repository, we must have a workflow for compiling the styles.
 * Install the latest NodeJS
 * Then, go to /public folder and run "npm install"
-* Finally, run "compass watch" in your /public folder and the minified css will be generated.
+* Finally, run "compass watch" in your /public folder and the minified css will be generated and also your filesystem will watch for file changes (and overwrites the .css). You can also run "compass compile" as a single one-time command to generate the css.
 
 ### Contribution