update note for non-functioning default setup
diff --git a/README.md b/README.md
index d0092ce..f533183 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,5 @@
 Bare-bones template for setting up a buildbot/pelican website
 
+**NB**: this is a work in progress and will not work as-is
+until Infra updates the default pelican builder to buildsite.py
+