Add notebook for visualizing PDFM (#4)

* Add notebook for visualizing PDFM

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README.md

@@ -6,4 +6,15 @@ A collection of Jupyter notebook examples for using GeoAI
 
 Tutorials for Using Google's [Population Dynamics Foundation Model](https://github.com/google-research/population-dynamics) (PDFM)
 
-- [Predicting US Housing Prices with PDFM and Zillow Data](https://geoai-tutorials.gishub.org/PDFM/zillow_home_value/)
+- [Predicting US Housing Prices with PDFM and Zillow Data](https://geoai-tutorials.gishub.org/PDFM/zillow_home_value)
+- [Visualizing PDFM Features and Predicted Home Values](https://geoai-tutorials.gishub.org/PDFM/map_pdfm_features)
+
+## Demos
+
+- Visualize US meidan home values at the county level
+
+  ![image](https://github.com/user-attachments/assets/9052e391-a26a-4a75-9ffe-d4abac3c0fce)
+
+- Visualize PDFM features
+
+  ![image](https://github.com/user-attachments/assets/fd1b233b-2be0-47c3-b2d0-f53601020604)