Django==1.8.1
dj-database-url==0.3.0
dj-static==0.0.6
gunicorn==19.3.0
psycopg2cffi==2.6.1
static3==0.5.1
coverage==3.7.1

Django==1.8.1
dj-database-url==0.3.0
dj-static==0.0.6
gunicorn==19.3.0
cffi==0.9.2
psycopg2cffi==2.6.1
static3==0.5.1
coverage==3.7.1

Add cffi as explicit requirement
Add cffi as explicit requirement

This is required for Heroku to automatically install libffi. Otherwise a custom
buildpack would be required.
