Removed Django Support from MongoEngine

Django support has now been split out of MongoEngine and will be
revisted as a new but separate module.

Closes #958

.travis.yml

@@ -8,24 +8,18 @@ python:
 - pypy
 - pypy3
 env:
-- PYMONGO=2.7.2 DJANGO=dev
-- PYMONGO=2.7.2 DJANGO=1.7.1
-- PYMONGO=2.7.2 DJANGO=1.6.8
-- PYMONGO=2.7.2 DJANGO=1.5.11
-- PYMONGO=2.8 DJANGO=dev
-- PYMONGO=2.8 DJANGO=1.7.1
-- PYMONGO=2.8 DJANGO=1.6.8
-- PYMONGO=2.8 DJANGO=1.5.11
+- PYMONGO=2.7.2
+- PYMONGO=2.8
 matrix:
   exclude:
   - python: '2.6'
-    env: PYMONGO=2.7.2 DJANGO=dev
+    env: PYMONGO=2.7.2 
   - python: '2.6'
-    env: PYMONGO=2.8 DJANGO=dev
+    env: PYMONGO=2.8
   - python: '2.6'
-    env: PYMONGO=2.7.2 DJANGO=1.7.1
+    env: PYMONGO=2.7.2
   - python: '2.6'
-    env: PYMONGO=2.8 DJANGO=1.7.1
+    env: PYMONGO=2.8
   allow_failures:
   - python: pypy3
   fast_finish: true
@@ -43,9 +37,6 @@ install:
   true; fi
 - if [[ $PYMONGO != 'dev' ]]; then travis_retry pip install pymongo==$PYMONGO; true;
   fi
-- if [[ $DJANGO == 'dev' ]]; then travis_retry pip install git+https://github.com/django/django.git;
-  fi
-- if [[ $DJANGO != 'dev' ]]; then travis_retry pip install Django==$DJANGO; fi
 - travis_retry pip install https://pypi.python.org/packages/source/p/python-dateutil/python-dateutil-2.1.tar.gz#md5=1534bb15cf311f07afaa3aacba1c028b
 - travis_retry pip install coveralls
 - travis_retry python setup.py install