In order to allow the Sass generators to
pick up the default Rails CSS and transform it,
we leave it in a standard location for the CSS stylesheet generators to
handle. For the simple, default case, just copy it over.
# File railties/lib/rails/generators/css/scaffold/scaffold_generator.rb, line 13
def copy_stylesheet
copy_file "scaffold.css", "app/assets/stylesheets/scaffold.css"
end