Khan/khan-exercises — pull request #27850 by darthlukan (2012-08-12 19:12:22+00:00)
Title: Base 2 counting exercise

Hello! I've written a simple counting exercise based on the Binary Numbers (http://www.khanacademy.org/science/computer-science/v/binary-numbers) video lesson. Please review for possible inclusion.

Brian Tomlinson (darthlukan@gmail.com)