update readme

README.md

@@ -127,6 +127,11 @@ The majority of scripts is licensed under ASL 2.0 (including codes from Diffuser
 
 ## Change History
 
+### 17 Apr. 2023, 2023/4/17:
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+- Added the `--recursive` option to each script in the `finetune` folder to process folders recursively. Please refer to [PR #400](https://github.com/kohya-ss/sd-scripts/pull/400/) for details. Thanks to Linaqruf!
+- `finetune`フォルダ内の各スクリプトに再起的にフォルダを処理するオプション`--recursive`を追加しました。詳細は [PR #400](https://github.com/kohya-ss/sd-scripts/pull/400/) を参照してください。Linaqruf 氏に感謝します。
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 ### Naming of LoRA
 
 The LoRA supported by `train_network.py` has been named to avoid confusion. The documentation has been updated. The following are the names of LoRA types in this repository.