update README.md

Author: bonzini

README.md

@@ -4,10 +4,4 @@ This is a Gnome Shell extension to show the notifications as long as you don't t
 
 ### Install
 
-Easiest way to install this extension is via the Gnome Shell [Extension Website](http://extensions.gnome.org/).
-
-### About
-
-The original extension is by [@bonzini](http://github.com/bonzini). I just made the code available here and added support for Gnome Shell 3.4.
-
-Feel free to fork and update.
+Easiest way to install this extension is via the Gnome Shell [Extension Website](https://extensions.gnome.org/extension/41/permanent-notifications/).