prototype todo

[caseyg]

• [x] add content to work
• [x] add content to research
• [x] add prints to shop
• [x] add books to shop
• [x] add content to about
• [x] add images to case studies and give them a layout
• [x] make typer run off of jekyll
• [x] sort content on work into selected and more
• [x] add enough tagging to make homepage + work nav useful
• [x] add footer
• [x] add contact form to footer
• [x] resolve top nav split-link weirdness