add update instructions for 2.2

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
cleanup the cleanup targets

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
have pkgbuild.in depend on $@

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
add schedule for releases

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
some notes for a release

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>