low hanging fruit - nav-buttons and pagination
docs update
tabs use extend clearfix
convert the clearfix mixin to use the extend
Merge pull request #137 from meetup/extend-clearfix

@extend %clearfix instead of mixin
clearfix as extend
clearfix as extend
Merge branch 'master' into release_whitney

Conflicts:
	_site/assets/css/sassquatch.css
	_site/assets/css/sassquatch_mobile.css
	_site/assets/css/sassquatch_tests.css
	bower.json
	css/sassquatch.css
	css/sassquatch_mobile.css
	jekyll_docs/assets/css/sassquatch.css
	jekyll_docs/assets/css/sassquatch_mobile.css
	jekyll_docs/assets/css/sassquatch_tests.css
	sass/components/_pagination.scss
	sass/components/_tabs.scss