Updated
diff --git a/README.md b/README.md
index ccbcf38..63260de 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,8 @@
* With no options, the script installs the OpenStack services and a simulated fabric. It creates VMs for
XOS and ONOS but does not start these services.
* Adding the `-t` option will start XOS, bring up a vSG, install a test client, and run a simple E2E test.
- * Adding the `-e` option will add the ExampleService to XOS (and test it if `-t` is also specified).
+ * Adding the `-e` option will add the [ExampleService](http://guide.xosproject.org/devguide/exampleservice/)
+ to XOS (and test it if `-t` is also specified).
As mentioned above, be patient! With a fast Internet connection, the entire process will take at least
one hour to complete.