initial commit

[robert-smith-07]

@jaybobo
@mikegee

I know the tests are terrible, any documentation, comments, resources are appreciated.

[mikegee]

You may have intended to use a local variable here, but that $ prefix is making this a global instead. I think you can drop the $s in here.

[mikegee]

The attr_reader at the top exposes @age, etc. by calling methods age.

This line is both reading and assigning age if you used attr_accessor, to define the setter methods too, this line could be age += 1.

I prefer depending on the methods as much as possible. Ruby will gladly return nil for a typoed instance variable, but raises an error for a typoed method name.