Update README.md

Author: Hakorr

README.md

@@ -5,6 +5,8 @@
 A Graphical user interface for userscripts. Creating user-friendly userscripts can be a bit challenging, as the majority of regular users are scared to touch your code. UserGui allows you to unlock your userscript to more people, and create a more pleasing experience.
 
 ```js
+// @grant       GM_getValue
+// @grant       GM_setValue
 // @grant       GM.xmlHttpRequest
 // @require     https://raw.githubusercontent.com/AugmentedWeb/UserGui/main/usergui.js
 ```