Make pages smaller for larger upper bound
Improve credit links
Add replaceAllTokens template helper

Docpad is OO. No way to avoid that. May as well play to our strengths by
using this template helper to do string replacements based on template
data.
Replace tokens in img src
Use token replacement in default template
Update artboard with replaceAllTokens
Fix syntax error
Default margins on paragraph elements are now 1em

Rely on font-size to be multiple of 6px
Add generic .slide
Simplify html tag

We aren't targeting IE
Remove article
Convert to jade templates

Jade allows for more flexible templating with blocks, etc.
Move slide styles to html tag.
Add shadow to img
Add sticky-small