My Rails template (borrowing heavily from [Rails Application Templates](http://guides.rubyonrails.org/generators.html#application-templates) and [Everyday Rails](http://everydayrails.com/2011/02/28/rails-3-application-templates.html)

rails_template.rb

# create rvmrc file
create_file ".rvmrc", "rvm gemset use #{app_name}"

# Because Rails always seems to fail without it locally
gem 'pysch'

gem "haml-rails"

# hpricot and ruby_parser required by haml
gem "hpricot", :group => :development
gem "ruby_parser", :group => :development
gem "nifty-generators"
gem "simple_form"
gem "jquery-rails"

# authentication and authorization
if yes?("Do you need to install devise and cancan?")
  gem "devise"
  gem "cancan"
  generate("devise:install")
  model_name = ask("What would you like the user model to be called? [user]")
  model_name = "user" if model_name.blank?
  generate("devise", model_name)
end

# rspec, factory girl, webrat, autotest for testing

gem "rspec-rails", :group => [ :development, :test ]
gem "factory_girl_rails", :group => [ :development, :test ]

gem "faker", :group => :test
gem "capybara", :group => :test
gem "database_cleaner", :group => :test
gem "shoulda-matchers", :group => :test


gem 'coffee-rails', :group => :assets

run 'bundle install'

rake "db:create", :env => 'development'
rake "db:create", :env => 'test'

generate 'nifty:layout --haml'
remove_file 'app/views/layouts/application.html.erb' # use nifty layout instead
generate 'simple_form:install'
generate 'nifty:config'
remove_file 'public/javascripts/rails.js' # jquery-rails replaces this
generate 'rspec:install'
inject_into_file 'spec/spec_helper.rb', "\nrequire 'factory_girl'", :after => "require 'rspec/rails'"
inject_into_file 'config/application.rb', :after => "config.filter_parameters += [:password]" do
  <<-eos
    
    # Customize generators
    config.generators do |g|
      g.stylesheets false
      g.form_builder :simple_form
      g.fixture_replacement :factory_girl, :dir => 'spec/factories'
    end
  eos
end
run "echo '--format documentation' >> .rspec"

# authentication and authorization setup
generate "devise:install"
generate "devise User"
generate "devise:views"
rake "db:migrate"
generate "cancan:ability"

# clean up rails defaults
remove_file 'public/index.html'
remove_file 'rm public/images/rails.png'
run 'cp config/database.yml config/database.example'
run "echo 'config/database.yml' >> .gitignore"

# commit to git
git :init
git :add => "."
git :commit => "-a -m 'create initial application'"

say <<-eos
  ============================================================================
  Great work. Your new Rails application is ready to go. You deserve a raise.
  
  Don't forget to scroll up for important messages from installed generators.
eos