diff --git a/README.md b/README.md
index 69f2a64..97c38cd 100644
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@@ -1 +1,5 @@
-# Photon Light
+# Forward ray tracing demo
+
+![Screenshot](screenshot.jpg)
+
+A simple forward ray tracing demo. “Forward” means the rays are traced starting from the light (unlike common “reverse” ray tracing where rays are traced from the camera).