add gradio web ui in colab notebook (#5)

- add gradio web ui in colab notebook (5cbd307eb6ab2a583a679864e2c6dd35a8773698)


Co-authored-by: Ahsen Khaliq <[email protected]>

README.md

@@ -23,6 +23,11 @@ and can easily be run from one of the branches:
 
 For more information, please have a look at [the "Three flavors" section](#three-flavors).
 
+## Gradio
+
+We also support a [Gradio](https://github.com/gradio-app/gradio) web ui with diffusers to run inside a colab notebook: [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/drive/1RWvik_C7nViiR9bNsu3fvMR3STx6RvDx?usp=sharing)
+
+
 ### Example Text2Image
 
 ```python