BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4756
There are below updates in this patch:
1. Rename README to README.md so that it can be show as markdown
document.
2. Update some information about TDVF.
2. Fix some typo.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>