Locomotive Engine を Heroku で動かすまで ref: http://qiita.com/hal_sk/items/0512a4a9cb215fb016f5

bash

heroku config:add HEROKU_API_KEY=<YOUR HEROKU API KEY>
heroku config:add HEROKU_APP_NAME=<YOUR APP NAME>

file10.txt

ruby '2.0.0'

file14.txt

production:
  sessions:
    default:
      uri: <%= ENV['MONGOHQ_URL'] %>

file16.txt

config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
  :address        => 'smtp.sendgrid.net',
  :port           => 25,
  :authentication => :plain,
  :user_name      => ENV['SENDGRID_USERNAME'],
  :password       => ENV['SENDGRID_PASSWORD'],
  :domain         => ENV['SENDGRID_DOMAIN']
}

file18.txt

config.hosting = {
  :target     => :heroku,
  :api_key    => ENV['HEROKU_API_KEY'],
  :app_name   => ENV['HEROKU_APP_NAME']
}

file20.txt

module YourApplication
  class Application < Rails::Application
    ...
    config.assets.initialize_on_precompile = false
    ...
  end
end

file21.txt

bundle exec rake assets:precompile

file22.txt

git add .
git commit -am "launch it"
git push heroku master

file9.txt

gem 'locomotive-heroku', '~> 0.1.0', :require => 'locomotive/heroku'
gem 'thin', :group => 'production'

mongoid.yml

development:
  sessions:
    default:
      database: mycms_dev
      hosts:
        - localhost:27017
  options:
    identity_map_enabled: true

test:
  sessions:
    default:
      database: mycms_test
      hosts:
        - localhost:27017
  options:
    identity_map_enabled: true

production:
  sessions:
    default:
      uri: <%= ENV['MONGOHQ_URL'] %>