Added documentation how to run examples [ci skip]

examples/README.md

+# Examples
+
+To run the example configurations, ensure Python and MkDocs are up and running,
+change to the respective directory and run `mkdocs serve`. This will print:
+
+``` sh
+INFO    -  Building documentation...
+INFO    -  Cleaning site directory
+[I 170620 18:54:55 server:283] Serving on http://127.0.0.1:8000
+[I 170620 18:54:55 handlers:60] Start watching changes
+[I 170620 18:54:55 handlers:62] Start detecting changes
+```
+
+Go to http://127.0.0.1:8000 to see the resulting documentation.