require "date"

namespace :appcache do
  desc "update the date in the appcache file (in the gh-pages branch)"
  task :update do
    appcache = File.read("cache.appcache")
    updated  = "# Updated: #{DateTime.now}\n"

    File.write("cache.appcache", appcache.sub(/\A(#.*$\n)?/, updated))
  end
end