Add URL to details section

README.md

@@ -105,7 +105,8 @@ This functionality is provided by [cytoscape.js](http://js.cytoscape.org/). If y
 ### Show more details
 
 By default, only states and edges are shown.
-If you want to annotate `conditions` and `enter/exit` callbacks as well you can pass `details=true` as an URL argument.
+If you want to annotate `conditions` and `enter/exit` callbacks as well you can pass `details=true` as an URL argument like this:
+[localhost:8080?details=true](http://localhost:8080?details=true).
 This graph (does not make much sense and) has been generated by `examples/process.py`.
 You might remember that graph from transitions' documentation.