code: def execute
        scripts = Dir.glob(File.join(@script_dir, @script_file))
        scripts.each do |script|
          list[script] = []
          if show_methods
            list[script] = retrieve_methods(script)
          end
        end
        list
      end
docs: Creates a new ScriptList. Takes params script_dir, script_file and show_methods
   Retrieves the information about scripts and methods from the script directory