cask :v1 => 'firefox-esr-us' do version '31.4.0' sha256 '20f0cf57c21181946c621b20f2758611a9c59d57ab25d4c991cde3f25dee404d' url "https://download.mozilla.org/?product=firefox-#{version}esr-SSL&os=osx&lang=en-US" homepage 'https://www.mozilla.org/en-US/firefox/organizations/' license :mpl app 'Firefox.app' end