Add Solution to Exercise 1.5.

Included are 3 files:

	 Exercise_1.5.scm
	 Exercise_1.5.tm
	 Exercise_1.5.tm

Exercise 1.5 is an interesting challenge, although it took me quite a while to tackle it. Hope you enjoy it too!

Thank you!
							Lawrence R. Amlord
							   Mar. 23, 2013
							   Xi'an China