Update README.md

Added:

* [Extending Dynamic View Loading for CRUD actions in AngularJS] (http://circuitbomb.com/anjularjs-extending-dynamic-view-loading-crud-actions/)
* [A Tip for Angular Unit Tests with Promises] (http://brianmcd.com/2014/03/27/a-tip-for-angular-unit-tests-with-promises.html)
* [Writing More Maintainable Angular.js Directives] (http://www.codelord.net/2014/03/30/writing-more-maintainable-angular-dot-js-directives/)