Update archive-mirror.sh
Added keyring from valve-repo to repo and archive-mirror.sh
fixed archive-mirror.sh to use valve key in the git repo
Merge branch 'master' of github.com:sharkwouter/steamos-installer

I don't know
Merge remote-tracking branch 'upstream/master'

Merged with upstream
Fixed loading Valve's pgp key
Fixed dependencies

It had wget twice and unzip is no longer used.
Merge pull request #60 from sharkwouter/master

Added Valve's repo key and changed archive-mirror.sh to support it