Merge pull request #155 from pocesar/master

Bower.json
Added Image Gallery and Ecommerce example templates
using -family settings for default argument in font-stack mixin - fixes #156
updates and improvements to templates and sample files
added new and enhanced configurable breakpoints
Add fractions-plural classes to responsive grid loop
Merge branch 'master' of github.com:groundworkcss/groundwork

Conflicts:
	css/groundwork.css
	src/scss/base/_grid.scss
Add new test grid file.

Everything seems to work with the exception of the extend classes. I
believe this is because of the way the test-grid.scss file is set up.
When the output happens, it takes all classes and adds extend- at the
beginning, but with the way the responsive sections are displayed,
extend only gets added to the first property. I don't believe this is
how the extend really happens when processesing, but I'm not sure how
to do a legitimate test.