def nyan_trail
      marks = @example_results.each_with_index.map{ |mark, i| highlight(mark) * example_width(i) }
      marks.shift(current_width - terminal_width) if current_width >= terminal_width
      nyan_cat.split("\n").each_with_index.map do |line, index|
        format("%s#{line}", marks.join)
      end.join("\n")
    end
def nyan_trail
      marks = @example_results.each_with_index.map{ |mark, i| highlight(mark) * example_width(i) }
      marks.shift(current_width - terminal_width) if current_width >= terminal_width
      nyan_cat.split("\n").each_with_index.map do |line, index|
        format("%s#{line}", marks.join)
      end.join("\n")
    end
Creates a rainbow trail

 @return [String] the sprintf format of the Nyan cat