Corrects the CSS / JS directory error

This fixes issue #12


Compass doesnt allow hardcoded folders for these files, and will break functionality if we use them. To have the folders described, the user must manually put in the data, like so:


```
compass create <project-name> -r aurora --using aurora --sass-dir "sass" --css-dir "css" --javascripts-dir "js" --images-dir "img"
```