Update README.md

README.md

@@ -8,6 +8,11 @@ The only **simple** yet **rich-featured** desktop note app you'll ever need for
 
 If you really like it [![PayPal](https://img.shields.io/badge/%24-PayPal-blue.svg)](https://www.paypal.me/BowenChang) or [支付宝](https://user-images.githubusercontent.com/15975872/29361889-175fef58-82bc-11e7-9e3b-ed3c748456b8.png)
 
+## Notice About Recent Changes
+**Before using the latest version please backup all of the note contents.**
+
+Commit [2108429](https://github.com/changbowen/DesktopNote/commit/210842905f3477a5a183046c1684cd9514a071fc) moves most of the per-note settings to the note content file. By updating to the latest version you will lose the list of opened notes. But note contents will not be affected. As long as you know where the files are, you can re-open them later.
+
 ## Screenshot
 <img src="https://i.imgur.com/1DdJ4Sr.png" alt=""/>