Fixed Travis configuration, added Python 3.6

.travis.yml

@@ -1,17 +1,20 @@
 language: python
 
-python: 2.7
-
-env:
-  - TOX_ENV=py26
-  - TOX_ENV=py27
-  - TOX_ENV=py32
-  - TOX_ENV=py33
-  - TOX_ENV=py34
-  - TOX_ENV=flake8
+matrix:
+  include:
+    - python: 2.7
+      env: TOXENV=py27
+    - python: 3.3
+      env: TOXENV=py33
+    - python: 3.4
+      env: TOXENV=py34
+    - python: 3.5
+      env: TOXENV=py35
+    - python: 3.6
+      env: TOXENV=py36
 
 install:
   - pip install tox
 
 script:
-  - tox -e $TOX_ENV
+  - tox

tox.ini

@@ -4,7 +4,8 @@ envlist =
     py27,
     py33,
     py34,
-    py35
+    py35,
+    py36
 # ignore missing setup.py
 skipsdist = True