spec: Install README.md

Installing dead README symlink only is pretty useless.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NAndrea Bolognani <abologna@redhat.com>

libvirt.spec.in

@@ -1737,7 +1737,7 @@ exit 0
 %files
 
 %files docs
-%doc AUTHORS ChangeLog.gz NEWS README TODO
+%doc AUTHORS ChangeLog.gz NEWS README README.md TODO
 %doc libvirt-docs/*
 
 # API docs