diff --git a/README.md b/README.md
index 54254ea..e56a9a0 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,5 @@
-# BMW
\ No newline at end of file
+# BMW
+Biot-Savart Magnetic Vmec Vector potential.
+
+## Building
+This is a subproject of the [Stellarator-Tools](https://github.com/ORNL-Fusion/Stellarator-Tools) suite of codes. To build the code follow the instructions in the [Stellarator-Tools](https://github.com/ORNL-Fusion/Stellarator-Tools) repository.