Update README.md

1024jp · 1024jp · commit 734784cc0746 · 2024-09-23T23:35:34.000+09:00
diff --git a/README.md b/README.md
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 `cot` command-line tool
 =============================
 
+> [!IMPORTANT]
+> This repository is no more maintained. The `cot` command file has been moved to the [CotEditor repository](https://github.com/coteditor/CotEditor) since CotEditor 5.0.2.
+
+
 [![Test Status](https://github.com/coteditor/cot/workflows/Test/badge.svg)](https://github.com/coteditor/cot/actions)
 
 The command-line helper tool for [CotEditor](https://coteditor.com).
