install.sh: use --recurse-submodules on the initial clone, and always
run 'git submodule update --init --recursive' before rake install so a
fresh checkout doesn't leave zsh/prezto empty.
README: document --recurse-submodules for manual clones; mention the
recovery command for existing shallow clones.
Fixes: bad math expression errors and 'no such file or directory:
~/.zprezto/runcoms/zshrc' on fresh shell startup when the Prezto
submodule hadn't been initialized.
install.sh: curl-pipe installer that clones to ~/.yadr, runs YADR's
native rake install, then layers personal dotfiles on top of $HOME
with backups on collision.
README.md: replace YADR's upstream readme with drunkendotfiles-
specific usage docs, credit, and refresh-from-upstream instructions.
Instead of asking the user to clone the repo and running rake
install, there's is now an easy .sh script that can be downloaded
and invoked in a single line.
The script takes a parameter "ask" if the use prefers to control
which modules of yadr are installed.
