Concat K

gulpfile.js

/**
 * Gulp stuff
 */ 

gulp.task('css', function () {
    gulp.src(paths.sass) // something like a array of scss files [ 'default.scss', 'colors.scss', 'user.scss' ]
        .pipe(plugins.sass({errLogToConsole: true}))
        .pipe(plugins.minifyCss())
        .pipe('concat')
        .pipe(gulp.dest('./www/application.min.css'));
});