add tokenizer

tokenizer_config.json

@@ -104,9 +104,9 @@
   "eos_token": "</s>",
   "extra_ids": 100,
   "model_max_length": 512,
-  "name_or_path": "t5-base-tweetqa-qag",
+  "name_or_path": "lmqg_output/t5_base_tweetqa/best_model",
   "pad_token": "<pad>",
-  "special_tokens_map_file": "lmqg_output/t5_base_tweetqa/model_mzgdpa/epoch_10/special_tokens_map.json",
+  "special_tokens_map_file": null,
   "tokenizer_class": "T5Tokenizer",
   "unk_token": "<unk>"
 }