update d2d_wrapper to use less fragile file globbing
update buildboot init to use /proc/meminfo instead of scraping free's output
update reqs.list.chroot to use newlines instead of spaces so that PRs to it are easier to review (and it helped me notice two duplicates)
run hooks from /lib/live/config/ on boot
add docker group (because /etc/init.d/docker assumes it exists)
Merge pull request #25 from tianon/buildboot-tweaks

A few buildboot tweaks, but most importantly running the hooks in /lib/live/config/ on boot