Added a tox.ini and updated the travis config to work with tox

.gitignore

@@ -14,3 +14,4 @@ MANIFEST
 dist/
 .venv
 example/media/
+.tox/

.travis.yml

@@ -1,16 +1,23 @@
 language: python
-python:
-  - "2.7"
-env:
-  - DJANGO_VERSION=1.6.11
-  - DJANGO_VERSION=1.7.7
-  - DJANGO_VERSION=1.8
-install:
-  - pip install Django==$DJANGO_VERSION
-  - pip install -e .
-  - pip install South
-script:
-  - ./example/manage.py test categories --settings='settings-testing' 
+
 branches:
   only:
-    - master
+    - master
+
+env:
+  - TOXENV=py27-django18
+  - TOXENV=py27-django19
+  - TOXENV=py34-django18
+  - TOXENV=py34-django19
+  - TOXENV=py35-django18
+  - TOXENV=py35-django19
+
+install:
+  - pip install tox
+
+script:
+  - tox -e $TOXENV
+
+after_success:
+  - pip install codecov
+  - codecov -e TOXENV

categories/tests/test_category_import.py

@@ -3,12 +3,16 @@
 # test mixed
 import os
 
-from django.test import TestCase
+from django.conf import settings
+from django.test import TestCase, override_settings
 from categories.models import Category
 from categories.management.commands.import_categories import Command
 from django.core.management.base import CommandError
 
+from categories.registration import _process_registry, registry
 
+
+@override_settings(INSTALLED_APPS=(app for app in settings.INSTALLED_APPS if app != 'django.contrib.flatpages'))
 class CategoryImportTest(TestCase):
     def setUp(self):
         pass

tox.ini

@@ -0,0 +1,14 @@
+[tox]
+envlist =
+    py27-django{18,19},
+    py34-django{18,19},
+    py35-django{18,19},
+
+[testenv]
+deps=
+    django19: Django==1.9.2
+    django18: Django==1.8.9
+    -r{toxinidir}/requirements.txt
+
+commands=
+  {toxinidir}/example/manage.py test --settings='settings-testing' categories