rename extension

Author: jedymatt

tests/res/data.yml

@@ -0,0 +1,6 @@
+- model: tests.models.Employee
+  data:
+      name: Juan Dela Cruz
+- model: tests.models.Company
+  data:
+      name: Carte

tests/test_loader.py

@@ -10,6 +10,6 @@ def test_load_entities_from_json(self):
         self.assertEqual(len(entities), 6)
 
     def test_load_entities_from_yaml(self):
-        entities = load_entities_from_yaml('tests/res/data.yaml')
+        entities = load_entities_from_yaml('tests/res/data.yml')
         print(entities)
         self.assertEqual(len(entities), 2)