Bug 1836: Updated README.

Change-Id: Iac1e3db1305d7dd59af13b1ade73c59f2b710e64
Signed-off-by: Hideyuki Tai <Hideyuki.Tai@necam.com>
(cherry picked from commit 0614752be7cd8c91e289e20ffb98bd56ec565da7)