Update README.md

More prominent bill of materials under hardware

README.md

@@ -52,7 +52,8 @@ poetry run 01 # Runs the 01 Light simulator (hold your spacebar, speak, release)
 
 # Hardware
 
-- The **01 Light** is an ESP32-based voice interface. [Build instructions are here.](https://github.com/OpenInterpreter/01/tree/main/hardware/light) It works in tandem with the **01 Server** ([setup guide below](https://github.com/OpenInterpreter/01/blob/main/README.md#01-server)) running on your home computer.
+- The **01 Light** is an ESP32-based voice interface. Build instructions are [here](https://github.com/OpenInterpreter/01/tree/main/hardware/light). A list of what to buy [here](https://github.com/OpenInterpreter/01/blob/main/hardware/light/BOM.md).
+- It works in tandem with the **01 Server** ([setup guide below](https://github.com/OpenInterpreter/01/blob/main/README.md#01-server)) running on your home computer.
 - **Mac OSX** and **Ubuntu** are supported by running `poetry run 01`. This uses your spacebar to simulate the 01 Light.
 - (coming soon) The **01 Heavy** is a standalone device that runs everything locally.