Dino catalog

@bwthomas Ready for another review. Thanks!!
Good news! We don't need these large comments on the top of classes or methods. Unless you like writing them... Then bad news. But if you are like me I tired of writing these kind of comments back when I did Perl. Anyways not sure if you've reached this point in the training but you'll be going over 'self documenting' code and see that this is not really necessary.