Add simple midi file and test examples for interface.

app.py

@@ -51,7 +51,7 @@ def process_midi(midi_file):
     name = Path(midi_file.name)
     
     # create the model input object
-    item = MusicItem.from_file(name, data.vocab);
+    item = MusicItem.from_file(name, data.vocab)
 
     # full is the prediction appended to the input
     pred, full = learner.predict(item, n_words=100)
@@ -72,8 +72,9 @@ def process_midi(midi_file):
 
 iface = gr.Interface(
     fn=process_midi, 
-    inputs="file", 
-    outputs="audio"
+    inputs=["file"], 
+    outputs="audio",
+    examples=['example-midi/C major scale.midi']
 )
 
 iface.launch()