Update djangorestframework from 3.5.3 to 3.6.2

Author: pyup-bot

project/requirements/base.txt

@@ -33,7 +33,7 @@ pytz==2017.2
 # Your custom requirements go here
 django-bootstrap3==8.2.2
 django-reversion==1.9.3
-djangorestframework==3.5.3
+djangorestframework==3.6.2
 Markdown==2.6.7
 django-filter==0.15.3
 djangorestframework-filters==0.9.1