diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c780cbb..9f74fb7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -13,6 +13,11 @@ This document describes how to contribute to Batarang
 
 ## Running the tests
 
+## Layout
+
+The `panel` directory contains...
+`panel/components` contains self-contained directives and services.
+
 ## Testing Batarang manually