Use python2 and python3

Author: chdemko

.travis.yml

@@ -1,20 +1,16 @@
-language: python
-python:
-  - "2.7"
-  - "3.4"
-  - "3.5"
-  - "3.6"
+language: generic
 before_install:
   - wget https://github.com/jgm/pandoc/releases/download/2.5/pandoc-2.5-1-amd64.deb
   - sudo dpkg -i pandoc-2.5-1-amd64.deb
   - pandoc -v
+  - sudo apt-get install python2.7
+  - sudo apt-get install python
+  - sudo apt-get install python-pip
 install:
   - pip install coveralls
   - pip install tox-travis
 script:
   - tox
-  - python2 `which coverage` run -a --source=pandoc_codeblock_include setup.py test
-  - python3 `which coverage` run -a --source=pandoc_codeblock_include setup.py test
   - coverage report -m
 after_success:
   - coveralls

tox.ini

@@ -1,6 +1,6 @@
 [tox]
-envlist = py27,py34,py35,py36
+envlist = py2,py3
 
 [testenv]
-deps = pytest
-commands = pytest
+deps = coverage
+commands = coverage run -a --source=pandoc_codeblock_include setup.py test