Generate a pdf page with `printToPDF` api

pdf.js

var remote = require('remote')

var browserWindow = remote.require('browser-window')
var fs = remote.require('fs')
var path = remote.require('path')

var win = new browserWindow({
  width: 800,
  height: 600,
  show: false
})

win.loadUrl('https://fraserxu.me')
win.show()

win.printToPDF({
  landscape: true
}, function(err, data) {
  var dist = 'C:\\Users\\windows\\Desktop\\test.pdf'
  fs.writeFile(dist, data, function(err) {
    if(err) alert('genearte pdf error', err)
  })
})