Reverting makefile
Reverting makefile

This is based on ongoing discussion on #92.
Am reverting to a base makefile as the changes made by Lagner do not
seem to work on readthedocs (sadly).

bootandy/Axelrod,risicle/Axelrod,drvinceknight/Axelrod,kathryncrouch/Axelrod,mojones/Axelrod,kathryncrouch/Axelrod,uglyfruitcake/Axelrod,uglyfruitcake/Axelrod,emmagordon/Axelrod,emmagordon/Axelrod,mojones/Axelrod,bootandy/Axelrod,risicle/Axelrod