phinze/homebrew-cask — pull request #3075 by rolandwalker (2014-02-21 14:23:06+00:00)
Title: create target directories on-demand

closes #2996. Moves the logic for creating target directores
from init-time in `cask.rb` to install-time within the artifact
classes. Removes the need for special-case `mkpath` for each
new artifact type.