drone/drone — pull request #46 by dz0ny (2014-02-11 09:52:48+00:00)
Title: Add: get git submodules in one step

--recursive
--recurse-submodules
After the clone is created, initialize all submodules within, using their default settings. This is equivalent to running git submodule update --init --recursive immediately after the clone is finished. This option is ignored if the cloned repository does not have a worktree/checkout (i.e. if any of --no-checkout/-n, --bare, or --mirror is given)

from http://git-scm.com/docs/git-clone