Update the property order using CSSComb, alignment with BEM for naming conventions, variables in external Sass partial
Tweak to gitignore file
%select-name options, refactor of Sass file to use variable controls
Updates to documentation for v2.0.0
Update to documentation
Demo URL (gh-pages) in README
Variables moved into "spacing.scss" and removal of "_variables.scss". Updates to versions in documentation and change log.