Add a cache buster to the web-font mixin
Change cache buster to be enabled with true/false
Add cache-buster function
web-font() mixin to use cache-buster() function
Fix variable declaration issue in cache-buster function
Add cache buster to icon font test
Merge pull request #25 from mobify/add-cache-buster

Add a cache buster to the web-font mixin
Merge branch 'master' of github.com:mobify/spline into add-icon-address-function

Conflicts:
	dist/_spline.scss
	test/test.scss