Fix documentation claiming that SourceParser.parse returns a parser object; it returns void.
Fix documentation claiming that SourceParser.parse returns a parser object;
it returns void.

Closes #325

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