Removed extra quotation mark from .travis.yml which caused the exclusion of Python 2.6 on Django 1.8 to fail.

Author: michaeljohnbarr

.travis.yml

@@ -46,7 +46,7 @@ matrix:
     - python: "2.6"
       env: DJANGO="django>=1.7.0,<1.8.0"
     - python: "2.6"
-      env: DJANGO="django>=1.8.0,<1.9.0""
+      env: DJANGO="django>=1.8.0,<1.9.0"
     - python: "2.6"
       env: DJANGO="https://github.com/django/django/archive/master.tar.gz"
     - python: "2.6"