Added spec to verify docstrings on metaclasses get parsed correctly.
Added spec to verify docstrings on metaclasses get parsed correctly.

lsegal/yard,jreinert/yard,ohai/yard,thomthom/yard,alexdowad/yard,iankronquist/yard,lsegal/yard,jreinert/yard,herosky/yard,travis-repos/yard,iankronquist/yard,alexdowad/yard,lsegal/yard,amclain/yard,travis-repos/yard,amclain/yard,thomthom/yard,herosky/yard,alexdowad/yard,iankronquist/yard,ohai/yard,herosky/yard,ohai/yard,jreinert/yard,thomthom/yard,amclain/yard