Update __init__.py

Add FulfillmentV2 method to init

Author: bvoelsch

shopify/resources/__init__.py

@@ -38,7 +38,7 @@
 from .page import Page
 from .country import Country
 from .refund import Refund
-from .fulfillment import Fulfillment, FulfillmentOrders
+from .fulfillment import Fulfillment, FulfillmentOrders, FulfillmentV2
 from .fulfillment_event import FulfillmentEvent
 from .fulfillment_service import FulfillmentService
 from .carrier_service import CarrierService