Armor, Character, and Character Enumerations

Created the Armor, Character abstract, and Character Enumerations
classes.

Armor: No longer carries any stats beyond just armor. I set the maximum
to 5 arbitrarily.
Abstract Character: The character class follows the UML I create pretty
closely. Add accessors for Heatlh and Mana, but I haven't set mutators
on those. Don't know right now how I'm going to do that. The getStat
method takes in a StatEnum and spits out the stat that you want, instead
of having 5 properties and accessors for that. Much simpler.