Documentation/git-checkout.txt: clarify usage The forms of checkout that do not take a path are lumped together in the DESCRIPTION section, but the description for this group is dominated by explanation of the -b|-B form. Split these apart for more clarity. Signed-off-by: Chris Rorvick <chris@rorvick.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>