Merge pull request #68 from leopic/master

Fixing a typo on getting started page
Add remove-omega mixin
Add nth-omega and remove-nth-omega shortcuts
Add breakpoint-output toggles
Add basic unit tests
Update changelog, fix settings typo
Upgrade docs to middleman 3.0
Update middleman instructions
Bump version 1.0.rc.3
update compass/sass gems
Add clarity to ie-fallback in docs
Use scss syntax in changelog
Remove legacy IE support from media-query output
Add $breakpoint-raw-output setting
Document $breakpoint-raw-output
Updated sass increases decimal-count
Update tests after removing IE legacy support inside media-queries
Add box-sizing controls and documentation
Add with-grid-settings mixin, plus documentation and test
Bump version 1.0.rc.4