README: add cmd directory description
authorXu Ziyuan <xzy.xu@rock-chips.com>
Fri, 26 Aug 2016 11:54:49 +0000 (19:54 +0800)
committerTom Rini <trini@konsulko.com>
Tue, 6 Sep 2016 17:41:41 +0000 (13:41 -0400)
commit740f7e5c1dfe032ec207ea211770df32773bfaca
tree88e0de1e130aee89544dbc7e347db8272a5fc4b6
parent15db77d7fe501d8d191e2824decf1c367903352d
README: add cmd directory description

All of the command files have moved to cmd directory, add description to
Directory Hierarchy.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
README