Updated upgrade readme
diff --git a/README-upgrade.md b/README-upgrade.md
index 60df143..538fb92 100644
--- a/README-upgrade.md
+++ b/README-upgrade.md
@@ -1,8 +1,14 @@
# Upgrading Apigee Edge
-The upgrade-edge.yml will perform an upgrade of Apigee Edge. Edge 4.16.xx is supported for upgrade
-through Edge 4.18.01. The upgrade process will be engaged when you invoke `ansible-playbook update-edge.yml`.
-The upgrade process will be looking for two variables.
+The playbook `upgrade-edge.yml` will perform an upgrade of Apigee Edge. Edge 4.16.xx is supported for upgrade
+through Edge 4.18.01.
+
+## Usage
+The upgrade process will be engaged when you invoke the playbook like this:
+
+ ansible-playbook update-edge.yml
+
+Please note that the variables below need to be set either upon invocation of the playbook or by updating your custom-properties.yml
## Variables Used
| Variable Name | Value | Description |
