docs: link to example repo + instructions

Author: urish

README.md

@@ -8,7 +8,15 @@ Wokwi Simulation API command line interface.
 npx wokwi-cli [directory]
 ```
 
-The give directory should have a `wokwi.toml` file, as explained in [the documentation](https://docs.wokwi.com/vscode/project-config#wokwitoml).
+The given directory should have a `wokwi.toml` file, as explained in [the documentation](https://docs.wokwi.com/vscode/project-config#wokwitoml).
+
+For example, you could clone the [ESP32 Hello World binaries repo](https://github.com/wokwi/esp-idf-hello-world), and point the CLI at the `esp-idf-hello-world` directory:
+
+```bash
+git clone https://github.com/wokwi/esp-idf-hello-world
+cd esp-idf-hello-world
+npx wokwi-cli .
+```
 
 ## License