Added Angular and Bootstrap tutorial

Author: sayands

README.md

@@ -161,6 +161,7 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 * [Build a web application with Django and AngularJS](https://thinkster.io/django-angularjs-tutorial)
 * Build A Beautiful Real World App with Angular 6 :
   * [Part I](https://medium.com/@hamedbaatour/build-a-real-world-beautiful-web-app-with-angular-6-a-to-z-ultimate-guide-2018-part-i-e121dd1d55e)
+* [Build Responsive layout with BootStrap 4 and Angular 6](https://medium.com/@tomastrajan/how-to-build-responsive-layouts-with-bootstrap-4-and-angular-6-cfbb108d797b)
 
 #### Node: