Khan/khan-exercises — pull request #6100 by sinchan (2011-11-11 09:53:17+00:00)
Title: Added Greatest Common Divisor using Euclid's Algorithm Exercise

Added Greatest Common Divisor using Euclid's Algorithm exercise for the
MIT Founder's Journey Class.

The exercise tests students who are trying to learn how to use Euclid's Algorithm to find the Greatest
Common Divisor.