Rewritten CSS in SCSS with Compass

- The CSS file is now generated with SCSS (sass-lang.com)
- Compass is used for extra features/mixins like vendor prefixing. In
the future spirte map building culd be included. (compass-style.org)
- Added a Compass build config.rb
Added Compass info To ReadMe
Added both a minify and a expanded version

Added both a minify and a expanded versionof the compiled css, with two
config files.
sass support