drop python 2.6 support

Author: tony

.travis.yml

@@ -2,7 +2,6 @@ language: python
 
 sudo: false
 python:
-  - 2.6
   - 2.7
   - 3.3
   - 3.4

README.rst

@@ -179,7 +179,7 @@ Project details
 
 ==============  ==========================================================
 tmux support    1.8, 1.9a, 2.0, 2.1, 2.2, 2.3
-python support  2.6, 2.7, >= 3.3, pypy, pypy3
+python support  2.7, >= 3.3, pypy, pypy3
 Source          https://github.com/tony/libtmux
 Docs            http://libtmux.git-pull.com
 API             http://libtmux.git-pull.com/api.html

doc/developing.rst

@@ -170,7 +170,7 @@ libtmux uses `travis-ci`_ for continuous integration / automatic unit
 testing.
 
 libtmux is tested against tmux 1.8 and the latest git source. Interpretters
-tested are 2.6, 2.7 and 3.3. The `travis build site`_ uses this
+tested are pypy, pypy3, 2.7 and >= 3.3. The `travis build site`_ uses this
 `.travis.yml`_ configuration:
 
 .. literalinclude:: ../.travis.yml

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py33, py34, py35
+envlist = py27, py33, py34, py35
 
 [testenv]
 commands = make test []