Update README.md

Manually adding 2 links from @justinobney

* [Keeping Angular “service” collection data in sync with controllers] (www.justinobney.com/keeping-angular-service-list-data-in-sync-among-multiple-controllers/)
* [Tips for using AngularJS in ASP.Net MVC] (http://www.justinobney.com/tips-for-using-angularjs-in-asp-net-mvc/)