Added Avenir font (see #15)
Merge branch 'master' of github.com:cremalab/cremalab.com into typography-15-rl
Refactored Style Structure and updated heading-scale mixin.
Adjusted Heading sizes and added 'span.subHeading' class to handle Heading styles.
Removed overflow: hidden on body.
Merge pull request #26 from cremalab/typography-15-rl

Typography Setup