more concise synthesis

[rossmeissl]

        kvc.store :site_addr, :synthesize => lambda { |parcel| parcel.slice('No1', 'Street', 'Unit').values.map(&:strip).delete_if(&:empty?).join(' ') }

should be shortcut:

        kvc.store :site_addr, :synthesize => ['No1', 'Street', 'Unit']