Builds a class for a book and a textbook class that inherits from it. (Firehose Project Quiz #3)

quiz3.rb

class Book
  attr_accessor :title, :author

  def initialize(title, author)
    @title = title
    @author = author
  end

  def read
    puts "I'm reading #{@title} by #{@author}"
  end
end

class Textbook < Book
  def learn
    puts "I'm learning from #{@title} by #{@author}"
  end
end

hp = Book.new("Harry Potter", "J. K. Rowling")
hp.read

gibbon = Textbook.new("The Decline and Fall of the Roman Empire", "Edward Gibbon")
gibbon.learn