Fix travis test runner for django-mailbox.

.travis.yml

@@ -41,5 +41,5 @@ install:
 - pip install -r test_requirements.txt
 - pip install -q -e .
 script:
-- python setup.py test
+- py.test
 sudo: false

setup.py

@@ -22,12 +22,9 @@ setup(
     ),
     author='Adam Coddington',
     author_email='me@adamcoddington.net',
-    tests_require=tests_require,
     extras_require={
-        'test': tests_require,
         'gmail-oauth2': gmail_oauth2_require
     },
-    test_suite='django_mailbox.runtests.runtests',
     classifiers=[
         'Framework :: Django',
         'Intended Audience :: Developers',

test_requirements.txt

@@ -1,2 +1,3 @@
 pytest==2.9.1
 pytest-django==2.9.1
+mock==2.0.0