update readme

README.md

@@ -1,7 +1,15 @@
 # Garden
 
 [![Build Status](https://ci.vdhsn.com/api/badges/adam/garden/status.svg?ref=refs/heads/trunk)](https://ci.vdhsn.com/adam/garden)
+![Docker Image Size (latest by date)](https://img.shields.io/docker/image-size/vdhsn/garden?style=for-the-badge)
+![Website](https://img.shields.io/website?down_message=Outage&label=vdhsn.com&style=for-the-badge&up_message=Up&url=https%3A%2F%2Fvdhsn.com)
+
 
 My attempt at digital gardening
 
 
+## Developing
+
+Mainline is `trunk`
+
+To publish latest tag, Promote in Drone