def run
      result = CssCompare::Engine.new(@options)
                                 .parse!
                                 .equal?
      write_output(result.to_s + "\n", @options[:output])
    end
def run
      result = CssCompare::Engine.new(@options)
                                 .parse!
                                 .equal?
      write_output(result.to_s + "\n", @options[:output])
    end
Runs the comparison.