This example code is from Martin Fowler's book "Refactoring:
Improving the Design of Existing Code".  It is in the state
you see at the beginning of Chapter 1.

Original version by David Koontz, available at:
http://david.koontz.name/home/Projects/Entries/2008/4/13_Photo_of_the_Day.html

2010-0513
Ported to Ruby for 810:188 (Summer 2010) by Eugene Wallingford.