Update docs to mention Django 1.11 / Python 3.6 support

README.rst

@@ -80,7 +80,7 @@ We thank `BrowserStack <https://www.browserstack.com/>`_, who provide the projec
 
 Compatibility
 ~~~~~~~~~~~~~
-Wagtail supports Django 1.8.x and 1.10.x, on Python 2.7, 3.4 and 3.5. Supported database backends are PostgreSQL, MySQL and SQLite.
+Wagtail supports Django 1.8.x, 1.10.x and 1.11.x, on Python 2.7, 3.4, 3.5 and 3.6. Supported database backends are PostgreSQL, MySQL and SQLite.
 
 Contributing
 ~~~~~~~~~~~~

docs/getting_started/integrating_into_django.rst

@@ -5,7 +5,7 @@ Integrating Wagtail into a Django project
 
 Wagtail provides the ``wagtail start`` command and project template to get you started with a new Wagtail project as quickly as possible, but it's easy to integrate Wagtail into an existing Django project too.
 
-Wagtail is currently compatible with Django 1.8, 1.9 and 1.10. First, install the ``wagtail`` package from PyPI:
+Wagtail is currently compatible with Django 1.8, 1.10 and 1.11. First, install the ``wagtail`` package from PyPI:
 
 .. code-block:: console