This cask installs PixelSnap from a disk image in the current directory

pixelsnap.rb

require 'uri'

cask 'pixelsnap' do
  version '1.4.1'
  sha256 '13831053af6c1774107619b9419253a3127e2b4eb02e52f8099108e260dcf1d7'

  url "file://#{URI.encode(File.expand_path(File.dirname(ARGV[1] || '')))}/PixelSnap-1.4.1.dmg"
  name 'PixelSnap'
  homepage 'https://getpixelsnap.com/'

  app 'PixelSnap.app'

  uninstall login_item: 'PixelSnap'

  zap trash: [
               '~/Library/Caches/com.getpixelsnap',
               '~/Library/Preferences/com.getpixelsnap.app.plist',
             ]
end