Update README with information about monitoring

README.md

@@ -25,3 +25,11 @@ setting this value you *must* have verified ownership of the domain with Google.
 [Instructions on how to do
 this](https://guidebook.devops.uis.cam.ac.uk/en/latest/notes/google-domain-verification/)
 can be found in the DevOps division guidebook.
+
+## Monitoring and Alerting
+If the variable [alerting_email_address](variables.tf) is set, the module adds
+basic uptime alerting via email for failing http polling. See [variables.tf](variables.tf)
+for how to configure alerting and monitoring.
+
+Note that monitoring and alerting  must be in a Stackdriver monitoring workspace 
+and this must be configured manually, at the time of writing this.

modules/monitoring/README.md

@@ -3,9 +3,6 @@
 This provides basic uptime alerting via email for failing http polling. See
 [variables.tf](variables.tf) for how to configure this module. 
 
-
 Note that the project must be in a Stackdriver monitoring workspace and this
 must be configured manually. At the time of writing there is no terraform
 support for this. This module will error when applying if this is not so.
-
-