Add better dev tools

- Add Ruby
- Add Gemfile
- Add important dynamic WP folders, but ignore them
- Separate source and compiled assets
- Move fonts and images under assets folder
- Get rid of obsolete stylesheets and image garbage

- Set up stylesheet source files for Sass using Bourbon
- Set up Bourboned stylesheet source files for Juicer
- Set up Jammit and Guard to compile production ready JS And CSS files
- Set up Guard Copy to copy the compiled files into the right directories