<NME> tox.ini
<BEF> [tox]
envlist = py27,pep8

[testenv]
deps=pytest       
skip_install = true
deps =
  poetry
commands =
  poetry install -v
  poetry run pytest

<MSG> Add Python 2.6 to tox runner

<DFF> @@ -1,5 +1,5 @@
 [tox]
-envlist = py27,pep8
+envlist = py26,py27,pep8
 
 [testenv]
 deps=pytest       

Add Python 2.6 to tox runner