added heroku badge and demo link

Author: Hardik Kaji

README.md

@@ -1,6 +1,7 @@
 # AngularJS ES6 Starter Kit
 
-## Demo: https://hardik-angularjs-kit.netlify.com/
+### Demo Netlify: https://hardik-angularjs-kit.netlify.com/
+### Demo Heroku: https://hardik-angularjs-kit.herokuapp.com/
 
 [![Netlify Status](https://api.netlify.com/api/v1/badges/e33b05fe-f573-46bd-8a88-1c3cffa11587/deploy-status)](https://app.netlify.com/sites/hardik-angularjs-kit/deploys)   ![Heroku](https://heroku-badge.herokuapp.com/?app=hardik-angularjs-kit)