#!/bin/bash

[ -z "$1" -o `echo "$1" | tr '/' '\n' | wc -l` != 2 ] && \
	{ echo "usage: `basename $0` some/repo [destdir] # 'destdir' defaults to 'vendor/repo'"; exit 1; }
REPO="$1"

DEST="vendor/${REPO#*/}"
[ -n "$2" ] && DEST="$2"

git submodule add --force https://github.com/${REPO}.git "$DEST"
git config -f .gitmodules submodule.${DEST}.ignore dirty
git config -f .gitmodules submodule.${DEST}.branch master