diff --git a/README.md b/README.md
index b7c0d84..ba07195 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ experienced users who have an account on
 introduction to tildemush, understanding the interface, using
 tildemush, and the WITCH scripting language.
 
+If you are looking for a testing or developing environment, see [vilmibm](https://github.com/vilmibm)'s notes [here](https://github.com/vilmibm/tildemush)
+
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 **Table of Contents**