npm install fd-gulp-cssminfd-gulp-cssmin�����Ǹ���ָ������д��������css�ļ�����ѹ�˲���ʹ�õ���yuicompressor-2.4.8.jarѹ�߰���
cssmin()
$3
var gulp = require('gulp'),
cssmin = require('./index');gulp.task('cssmin', function(){
gulp.src('./style_test/*.css')
.pipe(cssmin())
.pipe(gulp.dest('./output'));
});