Add django 1.9 to tox.ini

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27-1.5, py27-1.6, py33-1.6, py27-1.7, py33-1.7, py34-1.7, py27-1.8, py33-1.8, py34-1.8
+envlist = py27-1.5, py27-1.6, py33-1.6, py27-1.7, py33-1.7, py34-1.7, py27-1.8, py33-1.8, py34-1.8, py27-1.9, py33-1.9, py34-1.9
 
 [testenv]
 commands=python {toxinidir}/tests/manage.py test core
@@ -53,3 +53,20 @@ basepython = python3.4
 deps = 
     django==1.8
     -egit+https://github.com/kennethreitz/tablib.git#egg=tablib
+
+[testenv:py27-1.9]
+basepython = python2.7
+deps = 
+    django==1.9
+
+[testenv:py33-1.9]
+basepython = python3.3
+deps = 
+    django==1.9
+    -egit+https://github.com/kennethreitz/tablib.git#egg=tablib
+
+[testenv:py34-1.9]
+basepython = python3.4
+deps = 
+    django==1.9
+    -egit+https://github.com/kennethreitz/tablib.git#egg=tablib