With updated deps

utils/css.js

@@ -0,0 +1,24 @@
+var gulp = require('gulp');
+var concat = require('gulp-concat');
+var cssmin = require('gulp-cssmin');
+
+var handleError = require('./handleError');
+
+var runCss = function (options) {
+
+    if (options.watch) {
+        return gulp.watch(options.src, function () {
+            return gulp.src(options.src)
+            .pipe(concat('main.css'))
+            .pipe(gulp.dest(options.dest));
+        });
+    } else {
+        return gulp.src(options.src)
+        .pipe(concat('main.css'))
+        .pipe(cssmin())
+        .pipe(gulp.dest(options.dest));   
+    }
+
+};
+
+module.exports = runCss;