adds demos/genlist to readme

Author: hapticdata

README.md

@@ -12,6 +12,7 @@ To get started, [create a free Gemini API key](https://aistudio.google.com/apike
 
 - [demos/GenExplainer](https://github.com/google-gemini/multimodal-live-api-web-console/tree/demos/genexplainer)
 - [demos/GenWeather](https://github.com/google-gemini/multimodal-live-api-web-console/tree/demos/genweather)
+- [demos/GenList](https://github.com/google-gemini/multimodal-live-api-web-console/tree/demos/genlist)
 
 Below is an example of an entire application that will use Google Search grounding and then render graphs using [vega-embed](https://github.com/vega/vega-embed):