	# cd ~/annex
	# cp /tmp/big_file .
	# cp /tmp/debian.iso .
	# git annex add .
	add big_file (checksum...) ok
	add debian.iso (checksum...) ok
	# git commit -a -m added

When you add a file to the annex and commit it, only a symlink to
the annexed content is committed. The content itself is stored in
git-annex's backend.
