update readme

README.md

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-# delivery-zarf-init
+# Zarf Init for Delivery
+
+This is a custom init package used by delivery with the following features:
+
+- Registry1 agent image
+  - Registry1 repo:
+    - <https://repo1.dso.mil/dsop/opensource/defenseunicorns/zarf/zarf-agent>
+- distribution/distribution image registry v3
+  - Still in alpha
+    - <https://github.com/distribution/distribution/releases/tag/v3.0.0-alpha.1>
+  - Waiting on a registry1 image to be available
+    - <https://repo1.dso.mil/dsop/opensource/docker/registry-v2/-/issues/112>
+  - Supports s3 IRSA
+- No Gitea
+- No Logging Stack