def size
      size = {
        width:  @width,
        height: @height
      }

      # Specific size
      unless @options[:width].nil? && @options[:height].nil?
        size[:width]  = @options[:width].nil?  ? calculate_width(@options[:height]) : @options[:width]
        size[:height] = @options[:height].nil? ? calculate_height(@options[:width]) : @options[:height]
      end

      size
    end
def size
      size = {
        width:  @width,
        height: @height
      }

      # Specific size
      unless @options[:width].nil? && @options[:height].nil?
        size[:width]  = @options[:width].nil?  ? calculate_width(@options[:height]) : @options[:width]
        size[:height] = @options[:height].nil? ? calculate_height(@options[:width]) : @options[:height]
      end

      size
    end
determine the height and width of the octicon based on :size option