Merge pull request #105 from edx/zub/update-waffle

update django-waffle to 0.11.1

Author: zubair-arbi

requirements/base.txt

@@ -3,7 +3,7 @@ django-compressor==1.6
 django-extensions==1.6.1
 django-libsass==0.6
 django-storages-redux==1.3
-django-waffle==0.11
+django-waffle==0.11.1
 django-filter==0.11.0
 djangorestframework==3.2.3
 djangorestframework-jwt==1.7.2