Add py36 to tox.

Author: Rémy HUBSCHER

.travis.yml

@@ -1,8 +1,19 @@
 dist: trusty
 language: python
 python: 3.5
-script: make test
-after_success: coveralls
+env:
+  - TOX_ENV=py35
+  - TOX_ENV=flake8
+install:
+  - pip install tox
+script:
+  - tox -e $TOX_ENV
+after_success:
+  # Report coverage results to coveralls.io
+  - pip install coveralls
+  - coveralls
+
 matrix:
   include:
     - python: 3.6
+      env: TOX_ENV=py36

tox.ini

@@ -1,15 +1,13 @@
 [tox]
 downloadcache = {toxworkdir}/cache/
-envlist = py35,flake8
+envlist = py35,py36,flake8
 
 [testenv]
 passenv = TRAVIS TRAVIS_JOB_ID TRAVIS_BRANCH
 deps = -rrequirements-test.txt
-       coveralls
 
 commands =
     pytest -s --cov-config .coveragerc --cov smwogger smwogger/tests
-    - coveralls
 
 [testenv:flake8]
 commands = flake8 smwogger