fix naming

models/__init__.py

@@ -4,6 +4,9 @@ from .documents import Documents, DocumentFile
 from .orders import Orders
 from .permissions import Permissions
 from .provider import Provider
+from .rating_neg import RatingNeg
+from .rating_ok import RatingOk
+from .rating_pos import RatingPos
 from .relationship import Relationship
 from .resource import Resource
 from .service import Service