Get up and running on Heroku

This is a first pass at easily getting the app running on Heroku. With this merged into master, you should be able to

    heroku create
    git push heroku master
    heroku run rake db:migrate
    heroku open

You can see a demo at http://hubot-control.herokuapp.com/. Some node stuff still needs to be installed to actually  get Hubot working, but I figured I would share what I've got so far. Note that this also includes a fix for #1 (I just ran `rails g bootstrap:install`)