Update README

Octo8080X · Octo8080X · commit 21c160f5e214 · 2023-12-16T09:16:38.000+09:00
diff --git a/README.md b/README.md
@@ -24,6 +24,8 @@ export default defineConfig({
 });
 ```
 
+⚠ Recommend managing each key and salt using environment variables.
+
 ## Using the functionality provided by the plugin
 
 Methods are provided.
