fix(watch): fixed rebuilding CSS on SASS change

Author: mariuszm

gulpfile.js

@@ -293,7 +293,8 @@ gulp.task('watch', ['styles:sass', 'scripts:lint', 'scripts:cacheTpls', 'assets:
     });
 
     // watch for SASS changes
-    gulp.watch(config.paths.sass, ['styles:sass:imports'], function (event) {
+    var sassWatcher = gulp.watch(config.paths.sass, ['styles:sass:imports']);
+    sassWatcher.on('change', function (event) {
         if (event.path.lastIndexOf('.scss') === event.path.length - 5) {
             var files = config.build + '/assets/' + pkg.name + '-' + pkg.version + '.scss';
             return fnSass(files).pipe(plugins.livereload(server));