I added accesors for any property that is being initialized.
Createdan add_book method.
Created list-Books, and commented add books.
Added a borrowed-bks and available_bks instance variable. Added borrowed_books and available_books methods.
Added list books method. Changed @borrowed_bks to give, in plain english, the books and the person presently borrowing it. Modified available_bks to a hash, with the key as the book, and the value of 'available'.
Did me some commenting.
Changed basically everything while chasing errors. Will remember to commit in a timely manner in the future.