travis file update

.travis.yml

@@ -4,10 +4,10 @@ python:
     - "2.6"
     - "2.7"
 env:
-    - DJANGO="django>=1.3,<1.4"
-    - DJANGO="django>=1.4,<1.5"
+    - DJANGO=1.3
+    - DJANGO=1.4
 install:
-    - pip install -q $DJANGO django-mptt==0.5.1 django-reversion==1.6 django-classy-tags==0.3.4.1 django-sekizai==0.6.1 html5lib==0.95 jinja2==2.6 PIL==1.1.7 pygments==1.5 south==0.7.5 sphinx==1.1.3 argparse
+    - pip install pip install -q -r test_requirements/django-$DJANGO.txt --use-mirrors
 script:
     python runtests.py
 notifications: