Using .railsrc and a Rails Template

.railsrc

# ~/.railsrc

--database=postgresql
--skip-bundle
--skip-spring
--skip-test-unit
--skip-turbolinks
--template=/path/to/rails_template.rb

rails_template.rb

# ~/rails_template.rb

gem_group :development, :test do
  gem "capybara"
  gem "factory_girl_rails"
  gem "rspec-rails", "~> 3.0"
  gem "pry-rails"
  gem "shoulda-matchers"
end

gem_group :test do
  gem "launchy", require: false
  gem "valid_attribute"
end

gem_group :production, :staging do
  gem "rails_12factor"
end

scss = <<-SCSS
@import "*";
SCSS

run "echo '#{scss}' >> app/assets/stylesheets/application.scss"
run "rm app/assets/stylesheets/application.css"
run "rm README.rdoc"
run "echo '# #{@app_name.titleize}' >> README.md"

run("bundle install")

generate("rspec:install")
rake("db:create")

run "echo 'require \"capybara/rails\"' >> spec/rails_helper.rb"

git :init
git add: "."
git commit: "-a -m initial"