setting default model to mobilenet_v2

app.py

@@ -39,7 +39,7 @@ model_name_to_path = {
 
 
 # Create predict function
-def predict(img, model_name: str,) -> Tuple[Dict, float]:
+def predict(img, model_name: str = "mobilenet_v2",) -> Tuple[Dict, float]:
     """
     Desc: Transforms and performs a prediction on img and returns prediction and time taken.
     Args: