adds directions for using spaces

README.md

@@ -20,4 +20,16 @@ The Molecular Sciences Software Institute (MolSSI)'s central hub for AI & ML res
 
 ## Data Migration
 
-We are migrating our MolSSI machine learning [datasets](https://molssi-ai.github.io/ml-datasets) to Hugging Face Hub!
+We are migrating our MolSSI machine learning [datasets](https://molssi-ai.github.io/ml-datasets) to Hugging Face Hub!
+
+## Spaces
+
+Our Hugging Face Spaces are open to the public and free to use.
+
+**Note**: When clicking on a Space icon, you may be redirected to the following screen
+
+<img src="https://cdn-uploads.huggingface.co/production/uploads/6407dfcd8dca6cec91c86cfa/K2i776AX7nW6LK_aHBgcj.png" alt="huggingface token" width="500"/>
+
+copy the highlighted **huggingface** token, paste it in the token text box below it,
+and press login.
+