escpos-usb

#### USB(vid, pid)
``javascript
const escpos = require('escpos');
escpos.USB = require('escpos-usb');

const usbDevice = new escpos.USB(0x01, 0xff);
`
vid(Vendor Id) and pid (Product Id) can be checked with the lsusb command or escpos.USB.findPrinter()` method.