Added Django 1.7RC1 to the build process and excluded it from running on Python 2.6.

.travis.yml

@@ -9,19 +9,27 @@ python:
     - "3.4"
     - "pypy"
 env:
+  - PYMONGO=dev DJANGO=dev
   - PYMONGO=dev DJANGO=1.6.5
   - PYMONGO=dev DJANGO=1.5.8
+  - PYMONGO=2.7.1 DJANGO=dev
   - PYMONGO=2.7.1 DJANGO=1.6.5
   - PYMONGO=2.7.1 DJANGO=1.5.8
 
 matrix:
+    exclude:
+        - python: "2.6"
+          env: PYMONGO=dev DJANGO=dev
+        - python: "2.6"
+          env: PYMONGO=2.7.1 DJANGO=dev
     fast_finish: true
 
 install:
     - sudo apt-get install python-dev python3-dev libopenjpeg-dev zlib1g-dev libjpeg-turbo8-dev libtiff4-dev libjpeg8-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.5-dev tk8.5-dev python-tk
     - if [[ $PYMONGO == 'dev' ]]; then pip install https://github.com/mongodb/mongo-python-driver/tarball/master; true; fi
     - if [[ $PYMONGO != 'dev' ]]; then pip install pymongo==$PYMONGO; true; fi
-    - pip install Django==$DJANGO
+    - [[ $DJANGO == 'dev' ]]; then pip install https://www.djangoproject.com/download/1.7c1/tarball/; fi
+    - [[ $DJANGO != 'dev' ]]; then pip install Django==$DJANGO; fi
     - pip install https://pypi.python.org/packages/source/p/python-dateutil/python-dateutil-2.1.tar.gz#md5=1534bb15cf311f07afaa3aacba1c028b
     - python setup.py install
 script: