VS2015 - Gulp 101 - compile all .less to .CSS

package.JSON

{
        "name": "package",
        "version": "1.0.0",
        "private": true,
        "devDependencies": {
                "gulp": "3.8.11",
                "gulp-bower": "0.0.10",
                "gulp-config": "0.3.0",
                "gulp-less": "3.0.3",
                "gulp-plumber": "1.0.0"
        }
}