Change how blocks/items are registered (desc)

tterrag is a meany face and yelled at me for using class.getSimpleName(). So here's an API-friendly re-work of the registration system. This allows all our Items/Blocks to be obtained via the API. Just add a new enum.

src/main/java/WayofTime/bloodmagic/item/ItemRitualDiviner.java

@@ -43,6 +43,7 @@ public class ItemRitualDiviner extends Item
     public ItemRitualDiviner()
     {
         setUnlocalizedName(Constants.Mod.MODID + ".ritualDiviner");
+        setRegistryName(Constants.BloodMagicItem.RITUAL_DIVINER.getRegName());
         setCreativeTab(BloodMagic.tabBloodMagic);
         setHasSubtypes(true);
         setMaxStackSize(1);