Add code in section 3.1.1.

Included is the following file:

	3.1.1_Local_State_Variables.scm

Thank you!
							Lawrence X. Amlord
							   Sept 11th, 2013
							   Xi'an, China
Add my answer to Exercise 3.1.

Included is the following 2 files:

	Exercise_3.1.scm
	Test_of_Exercise_3.1.scm

Thank you!
							Lawrence X. Amlord
							  Sept 11th, 2013
							   Xi'an, China
Add my answer to Exercise 3.2.

Included is the following 2 files:

	Exercise_3.2.scm
	Test_of_Exercise_3.2.scm

Thank you!
							Lawrence X. Amlord
							  Sept 12th, 2013
							  Xi'an, China
Add my answer to Exercise 3.3.

Included is the following 2 files:

	Exercise_3.3.scm
	Test_of_Exercise_3.3.scm

Thank you!
							Lawrence X. Amlord
							  Sept 12th, 2013
							  Xi'an, China
Add my answer to Exercise 3.4.

Included are the following 2 files:

	Exercise_3.4.scm
	Test_of_Exercise_3.4.scm

Thank you!
							Lawrence X. Amlord
							  Sept 12th, 2013
							  Xi'an, China