安装gulp及相关插件

参考网址：http://blog.csdn.net/itlsx/article/details/49981459

http://blog.csdn.net/perfect666dream/article/details/70599685

 

命令：

npm install -g gulp gulp-load-plugins gulp-rename gulp-uglify gulp-minify-css gulp-minify-html gulp-jshint gulp-concat gulp-less gulp-sass gulp-imagemin gulp-livereload