Drop python2.6 support

Author: asottile

.travis.yml

@@ -2,7 +2,6 @@ language: python
 python:
 - pypy
 - pypy3
-- 2.6
 - 2.7
 - 3.3
 - 3.4

README.rst

@@ -24,7 +24,7 @@ distribution/deployment.  That means you can add just ``libsass`` into
 your ``setup.py``'s ``install_requires`` list or ``requirements.txt`` file.
 Need no Ruby nor Node.js.
 
-It currently supports CPython 2.6, 2.7, 3.3--3.5, and PyPy 2.3+!
+It currently supports CPython 2.7, 3.3--3.5, and PyPy 2.3+!
 
 .. _Sass: http://sass-lang.com/
 .. _Libsass: https://github.com/sass/libsass

setup.py

@@ -259,7 +259,6 @@ def run(self):
         'Operating System :: OS Independent',
         'Programming Language :: C',
         'Programming Language :: C++',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.3',