x/website: update README.md

The README in the root is being updated to let users know that this
website is under development and where they should direct their CLs.

Change-Id: I7355e1103e2ac202061db20b0c55e1cf6b1b95f6
Reviewed-on: https://go-review.googlesource.com/c/156957
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/README.md b/README.md
index eedef26..5edc74b 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,9 @@
 
 This repository holds the Go Website server code and content.
 
+## Note: This repo is in development and not deployed; please submit any golang.org changes to [x/tools/godoc](https://github.com/golang/tools/tree/master/godoc), [x/tools/cmd/godoc](https://github.com/golang/tools/tree/master/cmd/godoc), or [go/doc](https://github.com/golang/go/tree/master/doc)
+
+
 ## Download/Install
 
 The easiest way to install is to run `go get -u golang.org/x/website`. You can