hparams.py: adding ignore_layers argument to ignore text embedding layers when warm_starting

hparams.py

@@ -19,6 +19,7 @@ def create_hparams(hparams_string=None, verbose=False):
         dist_url="tcp://localhost:54321",
         cudnn_enabled=True,
         cudnn_benchmark=False,
+        ignore_layers=['embedding.weight'],
 
         ################################
         # Data Parameters             #