fix tox.ini

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = {py27,py34}-django{15,16,17,18}
+envlist = {py27,py34}-dj{15,16,17,18}
 skipsdist=True
 
 
@@ -9,14 +9,14 @@ basepython =
     py34: python3.4
 deps = 
     pytest
-    django15: Django>=1.5,<1.6
-    django16: Django>=1.6,<1.7
-    django17: Django>=1.7,<1.8
-    django18: Django>=1.8,<1.9
+    dj15: django>=1.5,<1.6
+    dj16: django>=1.6,<1.7
+    dj17: django>=1.7,<1.8
+    dj18: django>=1.8,<1.9
 commands = python setup.py test
 
 
 [testenv:py27-cov]
 deps =
-    django18: Django>=1.8,<1.9
+    dj18: Django>=1.8,<1.9
 command = coverage run --source=bootstrapform setup.py test