thoughtbot/gitsh — pull request #125 by gfontenot (2014-03-06 22:42:24+00:00)
Title: Create vendor/gems if it doesn't exist

I was having an issue when migrating this code over to Liftoff where if
vendor/gems didn't exist, the entire vendorizing script didn't run. By testing
that the directory exists and creating it if not, these errors stop happening.