diff --git a/src/lib.rs b/src/lib.rs
index 0a6d9a8..c055b6d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,8 @@
+//! WASM implementation of a double pendulum simulation
+//!
+//! See README.md for installation / build instructions.
+//! This implementation is just a stub for now.
+
 use wasm_bindgen::prelude::*;
 
 #[wasm_bindgen(start)]