jpegtran imagemin plugin, 同步官方代码，解决国内下载jpegtran-bin,optipng-bin依赖的源码慢的问题
npm install china-imagemin-jpegtran> jpegtran imagemin plugin
``
$ npm install --save imagemin-jpegtran
`js
const imagemin = require('imagemin');
const imageminJpegtran = require('imagemin-jpegtran');
imagemin(['images/*.jpg'], 'build/images', {use: [imageminJpegtran()]}).then(() => {
console.log('Images optimized');
});
`
Returns a promise for a buffer.
#### options
##### progressive
Type: boolean
Default:
Lossless conversion to progressive.
##### arithmetic
Type: boolean
Default:
Use arithmetic coding.
#### buffer
Type: buffer`
Buffer to optimize.
MIT © imagemin