add cdnurl config
make jekyll-picture-tag understand custom site.cdnurl config
use cloudfront url as cdn
inject production config value during jekyll generation
insert cdnurl during picture tag creation depending on production config value
picture tag creation fix
also check for production value, not just key
more semantic config key
remove hyphenation from code elements, fixes #18
CDN all assets called from css files with grunt-cdn
cdn all js assets calls
fix enable_cdnurl check in picture tag
revert cdn of js files
cdnurl as gruntConfig value
Merge pull request #19 from kremalicious/cdn

CDN for /media assets