Add query-string-keeper plugin (#152)

* Update README.md

* Update README.md

README.md

@@ -302,6 +302,7 @@ Jump to [0-9](#0-9) | [A](#a) | [B](#b) | [C](#c) | [D](#d) | [E](#e) | [F](#f)
 - [QRCode](https://github.com/seandrickson/YOURLS-QRCode-Plugin) - Another QR Code plugin. Get the QR code by simply clicking on a button in the Admin area (or by adding ".qr" to the end of the keyword).
 - [QueryString Forward](https://github.com/llonchj/yourls_plugins) - Forward the query string on short link to long URL (eg `http://sho.rt/kk?a=1` to `http://long.url/somepage/?a=1`).
 - [Query String Keeper](https://github.com/jessemaps/yourls-query-string-keeper) - Pass the query string from the shortlink to the long URL (eg `http://sho.rt/kk?hey` forwards to `http://long.url/bleh/?hey`).
+- [Query String Keeper](https://github.com/littleskyfish/query-string-keeper) - Pass the query string from the shortlink to the long URL (tested on YOURLS version 1.8.3 and php version 8.0.12).
 
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