Merge pull request #287 from spockNinja/fix_master_failing_test

Fix failing master test

Author: syrusakbary

.travis.yml

@@ -11,6 +11,9 @@ install:
     pip install -e .[test]
     pip install psycopg2 # Required for Django postgres fields testing
     pip install django==$DJANGO_VERSION
+    if [ $DJANGO_VERSION = 1.8 ]; then # DRF dropped 1.8 support at 3.7.0
+      pip install djangorestframework==3.6.4
+    fi
     python setup.py develop
   elif [ "$TEST_TYPE" = lint ]; then
     pip install flake8