add subjects to model + simple display on bo + add command to downloads documents to fixtures for test
# See README.md for details.
define archive::tar_gz($source, $target, $path=$::path) {
exec {"${name} unpack":
command => "curl -s -S ${source} | tar -xzf - -C ${target} && touch ${name}",
creates => $name,
path => $path,
require => Package[curl],
}
}