code: def render
        SassC::Engine.new(load_resource(template), syntax: :scss,
                                                   load_paths: [File.expand_path('themes/', Dir.pwd)],
                                                   style: :compressed).render
      end
docs: Wrapper for SassC::Engine.  Creates new SassC::Engine instance with main
   Sass file and renders it.
  
   @return [String]