Manage your Heroku Config Vars

See the blog post.

Install

Copy heroku.thor to lib/tasks/heroku.thor, heroku_env.rb to config/heroku_env.rb, and heroku.example.yml to config/heroku.yml. Modify the heroku.yml to suit your application.

Modify config/application.rb (at the top of the file)

require File.expand_path('../boot', __FILE__)
require "rails"
load(File.expand_path('../heroku_env.rb', __FILE__))

Done

thor -T should have your new deploy tasks.