add testing coverage across python 2.6 to python 3.3

Author: crccheck

.travis.yml

@@ -1,7 +1,10 @@
 language: python
 env:
-  - TOX_ENV=django14
-  - TOX_ENV=django15
-  - TOX_ENV=django16
+  - TOX_ENV=py26django14
+  - TOX_ENV=py26django15
+  - TOX_ENV=py27django14
+  - TOX_ENV=py27django15
+  - TOX_ENV=py27django16
+  - TOX_ENV=py33django16
 install: "pip install tox"
 script: tox -e $TOX_ENV

setup.py

@@ -26,5 +26,9 @@
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 2",
+        'Programming Language :: Python :: 2.6',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
     ],
 )

tox.ini

@@ -4,7 +4,14 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = django14,django15,django16
+envlist =
+    py26django14,
+    py27django14,
+    py26django15,
+    py27django15,
+    py27django16,
+    py33django16,
+
 downloadcache = {toxworkdir}/.cache
 
 [testenv]
@@ -14,17 +21,38 @@ deps =
     django-extensions>=0.9
     django-nose
 
-[testenv:django14]
+[testenv:py26django14]
+basepython=python2.6
 deps =
     {[testenv]deps}
     django>=1.4,>1.5
 
-[testenv:django15]
+[testenv:py26django15]
+basepython=python2.6
 deps =
     {[testenv]deps}
     django>=1.5,>1.6
 
-[testenv:django16]
+[testenv:py27django14]
+basepython=python2.7
+deps =
+    {[testenv]deps}
+    django>=1.4,>1.5
+
+[testenv:py27django15]
+basepython=python2.7
+deps =
+    {[testenv]deps}
+    django>=1.5,>1.6
+
+[testenv:py27django16]
+basepython=python2.7
+deps =
+    {[testenv]deps}
+    django>=1.6,>1.5
+
+[testenv:py33django16]
+basepython=python3.3
 deps =
     {[testenv]deps}
     django>=1.6,>1.5