Run tests on Django 2.0

Closes #530

Author: jleclanche

.travis.yml

@@ -8,6 +8,7 @@ env:
   - TOXENV=py27-django111
   - TOXENV=py34-django111
   - TOXENV=py36-django111
+  - TOXENV=py36-django20
   - TOXENV=py36-djangomaster
   - TOXENV=docs
   - TOXENV=flake8

setup.cfg

@@ -12,6 +12,7 @@ classifiers =
 	Environment :: Web Environment
 	Framework :: Django
 	Framework :: Django :: 1.11
+	Framework :: Django :: 2.0
 	Intended Audience :: Developers
 	License :: OSI Approved :: BSD License
 	Operating System :: OS Independent

tox.ini

@@ -1,8 +1,8 @@
 [tox]
 envlist =
 	py27-django{111},
-	py35-django{111,master},
-	py36-django{111,master},
+	py35-django{111,20,master},
+	py36-django{111,20,master},
 	docs,
 	flake8
 
@@ -16,7 +16,8 @@ setenv =
 	PYTHONPATH = {toxinidir}
 	PYTHONWARNINGS = all
 deps =
-	django111: Django >=1.11, <2.0
+	django111: Django>=1.11,<2.0
+	django20: Django>=2.0,<2.1
 	djangomaster: https://github.com/django/django/archive/master.tar.gz
 	djangorestframework >=3.5
 	coverage
@@ -34,6 +35,7 @@ commands = make html
 deps = sphinx
 
 [testenv:flake8]
+skip_install = True
 commands =
 	flake8 {toxinidir} {posargs}
 	isort {toxinidir} -c