# File lib/culerity/persistent_delivery.rb, line 9
    def self.included(base)
      base.class_eval do
        def self.deliveries
          return [] unless File.exist?(DELIVERIES_PATH)
          File.open(DELIVERIES_PATH,'r') do |f| 
            Marshal.load(f)
          end
        end 
      
        def self.clear_deliveries
          FileUtils.rm_f DELIVERIES_PATH
        end
      end
    end