Removes Icon Font Helper and provides minor bug fix to properly output unit values based on settings provided by author for header mixins.

Adds support for wiredep using the bower main block.

Issue #19: Margin calculation for pixel fallback incorrect. Measure Margin and Type Scale function now report correct values for varying units supplied w/fallbacks where required such as rem. Special thanks to @craigmdennis for the filing and assistance.

Fixes issue issue #139. Pixel fallback for bottom margin on headings

Now controls paragraph styling through a boolean

Global Copy Now Accepts Custom Font Families Issue #14