Allow loading via AutoTokenizer (#3)

- Add bert-base-cased tokenizer with model_max_length: 8192 (fdd629a0b4b0d3543fd2cfe70db482ffdcfe95a7)
- Remove AutoTokenizer from the config (7d7932ee225d71aadc1ba6d16b2fcadba10db703)

config.json

@@ -9,7 +9,6 @@
     "auto_map": {
         "AutoConfig": "configuration_bert.BertConfig",
         "AutoModelForSequenceClassification": "bert_layers.BertForTextEncoding",
-        "AutoTokenizer": "bert-base-uncased"
     },
     "classifier_dropout": null,
     "gradient_checkpointing": false,

special_tokens_map.json

@@ -0,0 +1,7 @@
+{
+  "cls_token": "[CLS]",
+  "mask_token": "[MASK]",
+  "pad_token": "[PAD]",
+  "sep_token": "[SEP]",
+  "unk_token": "[UNK]"
+}

tokenizer_config.json

@@ -0,0 +1,13 @@
+{
+  "clean_up_tokenization_spaces": true,
+  "cls_token": "[CLS]",
+  "do_lower_case": false,
+  "mask_token": "[MASK]",
+  "model_max_length": 8192,
+  "pad_token": "[PAD]",
+  "sep_token": "[SEP]",
+  "strip_accents": null,
+  "tokenize_chinese_chars": true,
+  "tokenizer_class": "BertTokenizer",
+  "unk_token": "[UNK]"
+}