支持xls与xlsx，各位大虾请多多指点，自己做的-Support xls and xlsx, prawn please a lot of guidance, make their own

xlsreadwrite 是快速读写.xls .xlsx 文件的控件，可以设置单元格的格式，可以读写图片等(Xlsreadwrite is a quick read and write.Xls.Xlsx file control, you can set the format of the cell, you can read and write pictures.)

一个 Node.js 模块，可用来读写和操作 XLSX 和 JSON 电子表格数据和样式(A Node.js module that can be used to read, write, and manipulate XLSX and JSON spreadsheet data and styles)