build: insall README* document using build system

build: insall README* document using build system

Purpose: make distro packager task simpler, more flexible to provide
more documentation without changing the packaging script.

Remove installation related documents from rpm as package already
installed when viewed.

+Workaround rpm bug[1].

[1] http://rpm.org/ticket/836

Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Acked-by: David Sommerseth <davids@redhat.com>
Message-Id: 1336849433-23066-1-git-send-email-alon.barlev@gmail.com
URL: http://article.gmane.org/gmane.network.openvpn.devel/6536
Signed-off-by: David Sommerseth <davids@redhat.com>