Use GitHub Git Database API to retrieve casks
Use GitHub Git Database API to retrieve casks

Fixes #27.

Marginal improvements in page loading times.

caskroom/caskroom.github.io,rafaelbiriba/caskroom.github.io,elovelan/caskroom.github.io,caskroom/caskroom.github.io,rafaelbiriba/caskroom.github.io,elovelan/caskroom.github.io