text: var cssmin = require('gulp-cssmin');
  var rename = require('gulp-rename');
  
  module.exports = function(gulp, callback) {
      return gulp.src(['**/*.css', '!**/*.min.css'], { cwd: config.destination.css })
          .pipe(cssmin())
          .pipe(rename({suffix: '.min'}))
          .pipe(gulp.dest(config.destination.css));
  };