ok. got angular responsive images to work. ditching picturefill. now will focus on getting the bottom nav in the 2 mobile states (tablet and default) to display horizontally. will also make the design tiles for default state to span 2 columns so have to change columns in _bass.sass from 5 to 4. will also add the canvas element SVG logo and style the nav. also have to get the design tile measurements and create tile bgs in PS.