install

npm install --save-dev jshint gulp-jshint   压缩js

npm install --save-dev gulp-minify-css      xxCSS

npm install --save-dev gulp-minify-html     xxHTML

npm install --save-dev gulp-jshint          validate check

npm install --save-dev gulp-concat          file merge

npm install --save-dev gulp-less            less 编译

npm install --save-dev gulp-sass　　　　　　sass 编译

npm install --save-dev gulp-imagemin        ZIP images