Update README.md

Added:

* [AngularJS JumpStart with Dan Wahlin] (https://www.udemy.com/angularjs-jumpstart/?sl=E0EYdlw9RBMALEwzBwZX)
* [How to integrate your UI Widgets with AngularJS] (http://blog.mobiscroll.com/how-to-integrate-your-ui-widgets-with-angularjs/)
* [Tuts+: Hands-on Angular] (https://tutsplus.com/course/hands-on-angular/)