flesh out the gradio demo

app.py

@@ -20,6 +20,16 @@ def extend(audio):
 
 gradio.Interface(
   fn=extend,
+  examples=[["examples/example.wav"]],
+  title="HiFi-GAN+",
+  description="""
+An audio bandwidth extension model from the paper
+[Bandwidth Extension is All You Need](https://doi.org/10.1109/ICASSP39728.2021.9413575)
+by Su, et al.
+For more information, see this
+[blog post](https://brentspell.com/2022/hifi-gan-bwe).
+""",
+  thumbnail="https://brentspell.com/favicon-32x32.png",
   inputs="audio",
   outputs="audio",
 ).launch()