Add shelf to InventoryType

Author: PseudoKnight

src/main/java/com/laytonsmith/abstraction/enums/MCInventoryType.java

@@ -33,7 +33,8 @@ public enum MCInventoryType {
 	STONECUTTER(false),
 	CHISELED_BOOKSHELF(false),
 	CRAFTER(false),
-	DECORATED_POT(false);
+	DECORATED_POT(false),
+	SHELF(false);
 
 	// Whether or not this inventory type can be created and used virtually
 	private final boolean canVirtualize;