Update README.md

Author: edgarmueller

README.md

@@ -7,6 +7,8 @@ It is based on create-react-app and only contains minor modifications.
 
  * Execute `npm ci` to install the prerequisites. If you want to have the latest released versions use `npm install`.
  * Execute `npm start` to start the application.
+ 
+ Browse to http://localhost:3000 to see the application in action.
 
 ## File Structure
 Let's briefly have a look at the most important files:
@@ -85,4 +87,4 @@ Since we also like to display the actual data that is being edited we
 from it. 
 
 ## Custom renderers
-Please see [our corresponding tutorial](https://jsonforms.io/docs/tutorial) on how to add custom renderers.
+Please see [our corresponding tutorial](https://jsonforms.io/docs/tutorial) on how to add custom renderers.