-- Homework 27, challenge: Animal -> Dog, Cat.
--
-- Build Animal as the base class with :describe(). Build Dog and Cat
-- both inheriting Animal, with :bark() and :meow() respectively.
-- Create one of each, call :describe() on both, then :bark() on the
-- dog and :meow() on the cat.
--
-- Run with: lua exercises/27/homework/04-inheritance.lua

-- Your code goes here: