Mod system completed

Top of Mods.cs contains information on where the mods are stored
Example Mod.zip contains a folder you can stick in your mods folder that
contains an example XML
Note: Any enemies added will need behaviors to be added manually, and
any items will need drop locations / forging recipes to be added
manually (although, you can add them to the shop via XML. Look at the
america set in addition2.xml for an example of that)