1. Define a class.
2. Build instance methods for the class.

You're going to be adding 2 instance methods to a Dog and Person class.

Open this lab with learn open and run your tests with learn.

Open lib/dog.rb and add a class definition for a Dog class.

Add an instance method #bark to your Dog class in lib/dog.rb that will puts "Woof!"

Add an instance method #sit to your Dog class in lib/dog.rb that will puts "The Dog is sitting".

Open lib/person.rb and add a class definition for a Person class.

Add an instance method #talk to your Person class in lib/person.rb that will puts "Hello World!"

Add an instance method #walk to your Person class in lib/person.rb that will puts "The Person is walking".

When you're done, submit the lab with learn submit.