Bugfix in travis conf

.travis.yml

@@ -4,9 +4,9 @@ python:
   - 3.3
   - 3.4
 env:
-  - DJANGO=django>=1.6,<1.7
-  - DJANGO=django>=1.7,<1.8
-  - DJANGO=https://www.djangoproject.com/download/1.8b2/tarball/
+  - DJANGO="django>=1.6,<1.7"
+  - DJANGO="django>=1.7,<1.8"
+  - DJANGO="https://www.djangoproject.com/download/1.8b2/tarball/"
 install:
   - pip install $DJANGO
   - pip install PyOpenSSL==0.14