Allow changing the code at build time

README.md

@@ -1,6 +1,6 @@
 # naive-keypad
 
-# Build the browser application
+## Build the browser application
 
 Ensure you have [Node.js](https://nodejs.org) installed. Then run:
 
@@ -8,3 +8,13 @@ Ensure you have [Node.js](https://nodejs.org) installed. Then run:
 npm install
 npm run build
 ```
+
+Copy the contents of the `dist` directory to your web server, and there you go!
+
+## Changing the code
+
+You may during the build process override the code of the keypad:
+
+```sh
+VITE_KEYPAD_CODE=7894 npm run build
+```