Update about_new_style_classes.py to make new-style class tests more consistent (#148)

Changed __class__ to __class__.__name__ in line 49 to be consistent with other tests illustrating new-style classes.

Author: xgongluo

python2/koans/about_new_style_classes.py

@@ -46,7 +46,7 @@ def test_old_style_classes_have_type_but_no_class_attribute(self):
 
     def test_new_style_classes_have_same_class_as_type(self):
         new_style = self.NewStyleClass()
-        self.assertEqual(__, self.NewStyleClass.__class__)
+        self.assertEqual(__, self.NewStyleClass.__class__.__name__)
         self.assertEqual(
             __,
             type(self.NewStyleClass) == self.NewStyleClass.__class__)