Modified early stopping criteria

QuoteGenerator.py

@@ -33,7 +33,7 @@ class QuoteGenerator():
             top_k=top_k, 
             top_p=top_p, 
             do_sample = do_sample,
-            early_stopping=True
+            early_stopping=num_beams > 1
         )
         
         return output[0]['generated_text']