Add Honcho (foreman alternative in Python) file(s).

The reason we have both Procfile and Honchofile is to be able to run both the workers and the web server in a single dyno on Heroku.

Honchofile

@@ -0,0 +1,2 @@
+web: ./manage.py runserver -p $PORT
+worker: ./manage.py runworkers

Procfile

@@ -0,0 +1 @@
+web: honcho start -f Honchofile -p $PORT

requirements.txt

@@ -23,3 +23,4 @@ sqlparse==0.1.8
 wsgiref==0.1.2
 wtf-peewee==0.2.2
 Flask-Script==0.6.6
+honcho==0.5.0