added Procfile for heroku
Using mongoLab db instead of local
Added login with google plus button

Squashed commit of the following:

commit 1daa7065e80cd4f86036b90e96c8f589036d7bdb
Author: marneborn <mikael@arneborn.net>
Date:   Thu Oct 9 13:58:35 2014 -0700

    create provider and directive for button

commit 04ffbae9adccf8f7adc372481422dd0b5979a547
Author: marneborn <mikael@arneborn.net>
Date:   Wed Oct 8 12:52:39 2014 -0700

    blah