Update README.md

Author: Kidel

README.md

@@ -7,8 +7,9 @@ It is also possible to export and import the form configuration for future chang
 Now supports network topology preview (requires a modern browser).
 
 * [Demo](http://bytearound.com/jobs/nlg/) (may not always be up to date).
-* [Screenshot (configuration)](https://raw.githubusercontent.com/Kidel/Netkit-Lab-Generator/master/images/screencapture-1460378558427.png)
-* [Screenshot (runtime generated graph)](https://raw.githubusercontent.com/Kidel/Netkit-Lab-Generator/master/images/screencapture-1460378572119.png)
+* [Example configuration](https://raw.githubusercontent.com/Kidel/Netkit-Lab-Generator/master/examples/example_lab.config) (can be imported to generate the files or the graph)
+* [Screenshot (form)](https://raw.githubusercontent.com/Kidel/Netkit-Lab-Generator/master/images/screencapture-1460378558427.png)
+* [Screenshot (graph)](https://raw.githubusercontent.com/Kidel/Netkit-Lab-Generator/master/images/screencapture-1460378572119.png)
 
 
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