Updates README.

README.md

@@ -10,4 +10,18 @@ pinned: true
 license: apache-2.0
 ---
 
-Gradio clone of the original [LiT Demo](https://google-research.github.io/vision_transformer/lit/)
+Gradio clone of the original
+[LiT Demo](https://google-research.github.io/vision_transformer/lit/)
+running inference with big_vision code.
+
+Companion Colab:
+https://colab.research.google.com/drive/1f5MpJgE0XCU8ElT34uK4kTUkPnUqvJUt
+
+Local testing:
+
+```bash
+pip -m venv env
+. env/bin/activate
+pip install -qr requirements.txt
+python app.py
+```