Rails ENV variables: heroku development setup

.gitignore

# other stuff

config/env.rb

# other stuff

deploy.rb

username = ENV["USERNAME"]
password = ENV["PASSWORD"]

env.rb

ENV["USERNAME"] = "peter"
ENV["PASSWORD"] = "enis"

environment.rb

# Load the rails application
require File.expand_path('../application', __FILE__)

# Load heroku vars from local file
heroku_env = File.join(Rails.root, 'config', 'env.rb')
load(heroku_env) if File.exists?(heroku_env)

# Initialize the rails application
YourAppName::Application.initialize!