Update link to service in readme.

Author: j-fuentes

README.md

@@ -12,6 +12,8 @@
 Preflight is a tool to automatically perform Kubernetes cluster configuration
 checks using [Open Policy Agent (OPA)](https://www.openpolicyagent.org/).
 
+This repository hosts the agent part of Preflight. It sends data to the [Preflight SaaS](https://preflight.jetstack.io) platform.
+
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