Update README.md

Author: troolee

README.md

@@ -2,8 +2,7 @@ gridstack.js
 ============
 
 gridstack.js is a jQuery plugin for widget layout. This is drag-and-drop multi-column grid. It allows you to build
-draggable responsive bootstrap v3 friendly layouts. It also works great with [knockout.js](http://knockoutjs.com) and
-touch devices.
+draggable responsive bootstrap v3 friendly layouts. It also works great with [knockout.js](http://knockoutjs.com), [angular.js](https://angularjs.org) and touch devices.
 
 Inspired by [gridster.js](http://gridster.net). Built with love.