diff --git a/libs/stellar-util/readme.md b/libs/stellar-util/readme.md
new file mode 100644
index 0000000..d816455
--- /dev/null
+++ b/libs/stellar-util/readme.md
@@ -0,0 +1,5 @@
+Build (will create a bundle and copy it to ../../src/stellar-util.js):
+
+    npm install
+    npm run build
+