erb_index_path = File.join %w(app views layouts application.html.erb)
@generator.remove_file(erb_index_path)
slim_index_path = File.join %w(app views layouts application.html.slim)
@generator.create_file slim_index_path, <<-SLIM
doctype 5
html
  head
    title #{app_name}
    = stylesheet_link_tag    'application', media: 'all'
    = javascript_include_tag 'application'
    = csrf_meta_tags

  body class=controller_name
    = yield
SLIM