using mock instead of unittest.mock - it is the same but needed for e…

…arlier python version then 3.3

requirements.txt

@@ -1,12 +1,16 @@
 # This is an implicit value, here for clarity
 --index-url https://pypi.python.org/simple/
 
+# Those are like in setup.py
 beautifulsoup4>=4.3.2
 html5lib>=0.999
 httpcache>=0.1.3
-coveralls>=0.4.2
 six==1.3
 requests>=2.4.1
 pillow>=2.5.3
 singleton3>=1.0
 singleton-factory>=0.1
+
+# This is needed for tests
+coveralls>=0.4.2
+mock==1.0.1

tests/test_anime.py

@@ -1,8 +1,9 @@
 import unittest
-from unittest.mock import Mock
 import os
 from os import path
 
+from mock import Mock
+
 from pymal import account
 from pymal import anime
 from pymal import manga