add config

config.json

@@ -0,0 +1,6 @@
+{
+    "_name_or_path": "sentencepiece_ja",
+    "auto_map": {
+      "AutoTokenizer": "sentencepiece_ja.SentencePieceJA"
+    }
+}

tokenizer_config.json

@@ -1,4 +1,4 @@
 {
   "clean_up_tokenization_spaces": true,  
-  "tokenizer_class": "sentencepiece_ja.SentencePieceJA"
+  "tokenizer_class": "SentencePieceJA"
 }