add explanation below interface

app.py

@@ -70,5 +70,8 @@ iface = gr.Interface(fn=meta_model.read,
                      thumbnail="Utility/toucan.png",
                      theme="default",
                      allow_flagging="never",
-                     allow_screenshot=False)
-iface.launch()
+                     allow_screenshot=False,
+                     article="""This is still a work in progress, models will be exchanged for better ones as soon as they are done. All of those languages are spoken by a single model. Speakers can be transferred across languages. More languages will be added soon.
+                     
+                     To learn more about the IMS Toucan Speech Synthesis Toolkit, [check out our GitHub page](https://github.com/DigitalPhonetics/IMS-Toucan).""")
+iface.launch(enable_queue=True)

packages.txt.py

@@ -1,2 +1,2 @@
+libsndfile1
 espeak-ng
-libsndfile1