Update travis config to support python 3.5 and django 1.7-1.9

.travis.yml

@@ -2,28 +2,20 @@ language: python
 
 python:
   - "2.7"
+  - "3.4"
+  - "3.5"
 
 env:
+  - DJANGO_PACKAGE="django>=1.9,<1.10"
+  - DJANGO_PACKAGE="django>=1.8,<1.9"
+  - DJANGO_PACKAGE="django>=1.7,<1.8"
   - DJANGO_PACKAGE="django>=1.6,<1.7"
   - DJANGO_PACKAGE="django>=1.5,<1.6"
   - DJANGO_PACKAGE="django>=1.4,<1.5"
-  - DJANGO_PACKAGE="https://www.djangoproject.com/download/1.7c1/tarball/"
 
 matrix:
   # Release candiate status
   allow_failures:
-  - env: DJANGO_PACKAGE="https://www.djangoproject.com/download/1.7c1/tarball/"
-
-  # Include specific versions Django for Python 3
-  include:
-  - python: "3.3"
-    env: DJANGO_PACKAGE="django>=1.6,<1.7"
-  - python: "3.3"
-    env: DJANGO_PACKAGE="https://www.djangoproject.com/download/1.7c1/tarball/"
-  - python: "3.4"
-    env: DJANGO_PACKAGE="django>=1.6,<1.7"
-  - python: "3.4"
-    env: DJANGO_PACKAGE="https://www.djangoproject.com/download/1.7c1/tarball/"
 
 install:
   - pip install -q $DJANGO_PACKAGE six