Support Django 1.11 and 2.0pre

Author: Pamela McA'Nulty

tox.ini

@@ -14,10 +14,10 @@
 
 [tox]
 envlist =
-    py27-django{14,15,16,17,18,19,110,110tip,tip},
-    py34-django{15,16,17,18,19,110,110tip,tip},
-    py35-django{18,19,110,110tip,tip},
-    py36-django{18,19,110,110tip,tip},
+    py27-django{14,15,16,17,18,19,110,110tip,111tip},
+    py34-django{15,16,17,18,19,110,110tip,111tiptip},
+    py35-django{18,19,110,110tip,111tip,tip},
+    py36-django{18,19,110,110tip,111tip,tip},
     check,doc
 
 [testenv]
@@ -31,6 +31,8 @@ deps =
     django19: Django >=1.9, <1.10
     django110: Django >=1.10, <1.11
     django110tip: https://github.com/django/django/archive/stable/1.10.x.tar.gz
+    #django111: Django >=1.11, <2.0
+    django111tip: https://github.com/django/django/archive/stable/1.11.x.tar.gz
     djangotip: https://github.com/django/django/archive/master.tar.gz
 
 commands =