BF: fixing docstring to pass doctest in adapter.py and import print_function from future for chaining_method.py

Author: yarikoptic

adapter.py

@@ -46,8 +46,10 @@ class Adapter(object):
     >>> objects = []
     >>> dog = Dog()
     >>> print(dog.__dict__)
+    {'name': 'Dog'}
     >>> objects.append(Adapter(dog, make_noise=dog.bark))
     >>> print(objects[0].original_dict())
+    {'name': 'Dog'}
     >>> cat = Cat()
     >>> objects.append(Adapter(cat, make_noise=cat.meow))
     >>> human = Human()

chaining_method.py

@@ -1,6 +1,8 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+from __future__ import print_function
+
 class Person(object):
 
     def __init__(self, name, action):