refactor the gulp configuration file

Author: dabeng

demo/local-datasource/bundle.js.map

@@ -82,8 +82,10 @@ gulp.task('build', ['css', 'js', 'watch']);
 
 gulp.task('webpack', ['build'], function () {
   webpack(require('./webpack.config.js'), function(err, stats) {
-    if (err) throw new gutil.PluginError('webpack', err);
-    gutil.log('[webpack]', stats.toString());
+    if (err) {
+      throw new gutil.PluginError('webpack', err);
+    }
+    gutil.log(gutil.colors.green('[webpack]', stats.toString()));
   });
 });