diff --git a/README.md b/README.md
index 606186e..c79ae4f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,12 @@
-# map 
+# Sunset Simulator
+
+## Organization
+
+The code is separated into two parts:
+- GUI file: [app.py](app.py)
+- "header" file: [skydome.py](skydome.py)
+
+
 
 to use the gui first 
 - set up the environment