symlink README.md to topdir

Change-Id: Iee4ea3b4dde9d986461438d2df93179868603ebf
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Dont copy README.md

Its now symlinked during environment setup

Change-Id: Idb8711009965b92d0049da13a45920d69a0116c4
Signed-off-by: Khem Raj <raj.khem@gmail.com>