//commande d'installation
/*

npm install

// pour souvenir
npm i gulp gulp.spritesmith --save

 */
//Requires
var gulp = require('gulp'),
    spritesmith  = require('gulp.spritesmith')

gulp.task('sprite', function () {
    var spriteData = gulp.src('img_entree/*.png')
        .pipe(spritesmith({
            /* this whole image path is used in css background declarations */
            imgName: 'img/sprite.png',
            cssName: 'css/sprite.css'
        }));
    return spriteData.pipe(gulp.dest('./'));
});