Update app.py

Added an extended description

app.py

@@ -26,7 +26,7 @@ iface = gr.Interface(
     inputs=gr.Image(type="pil"),
     outputs=gr.Label(num_top_classes=3),
     title="Image Classification with Materializer",
-    description="Upload an image to classify it using the Materializer model."
+    description="This model has been trained on texture images that are commonly used for 3d models in an attempt to create an AI model that understands what image 'material' should be used on a specific object. Upload an image to classify it using the Materializer model."
 )
 
 # Launch the interface