README.md: Add nesting setup/
authorW. Trevor King <wking@tremily.us>
Wed, 23 Oct 2013 19:18:41 +0000 (12:18 -0700)
committerW. Trevor King <wking@tremily.us>
Wed, 23 Oct 2013 19:29:27 +0000 (12:29 -0700)
commitd3827bdf82657d367549fde3caf78c55ca36134b
treee720d10f857d9b9be90df79d7081770071c19790
parented59b58a104a110c2f45f188f691c41413318660
README.md: Add nesting setup/

This gives the submodule-averse the nesting they'd usually get by
merging the master branch in a submodule at setup/.  They'll have to
merge the submodule's 'namespaced' branches by hand to pull in the
equivalent content.
setup/README.md [moved from README.md with 100% similarity]