Adding 2 repos clarification

README.md

@@ -1,3 +1,7 @@
+This is official Graphite docker image repo.
+
+This repo produces two different repos on Docker Hub - https://hub.docker.com/r/graphiteapp/graphite-statsd (stable repo, with manual releases) and https://hub.docker.com/r/graphiteapp/docker-graphite-statsd (development repo, with automatic builds, unstable, use with caution!)
+
 This repo was based on [@hopsoft's](https://github.com/hopsoft/) [docker-graphite-statsd](https://github.com/hopsoft/docker-graphite-statsd) docker image and was used as base for "official" Graphite docker image with his permission. Also, it contains parts of famous [@obfuscurity's](https://github.com/obfuscurity/) [synthesize](https://github.com/obfuscurity/synthesize) Graphite installer. Thanks a lot, Nathan and Jason!
 
 Any suggestions / patches etc. are welcome!