Added screenshot

Author: deckerweb

README.md

@@ -1,5 +1,7 @@
 # Breakdance QuickNav
 
+[<img src="https://raw.githubusercontent.com/deckerweb/breakdance-quicknav/master/assets-github/breakdance-quicknav-screenshot.png" data-canonical-src="https://raw.githubusercontent.com/deckerweb/breakdance-quicknav/master/assets-github/breakdance-quicknav-screenshot.png" width="772" height="250" />]
+
 The **Breakdance QuickNav** plugin adds a quick-access navigator to the WordPress Admin Bar (Toolbar). It allows easy access to Breakdance Builder Templates, Headers, Footers, Global Blocks, Popups, and (regular WordPress) Pages edited with Breakdance, along with other essential settings.
 
 ### Tested Compatibility

assets-github/breakdance-quicknav-screenshot.png

@@ -609,17 +609,17 @@ private function add_about_submenu( $wp_admin_bar ) {
             ) );
 
             $about_links = array(
-                'author'       => array(
+                'author' => array(
                     'title' => __( 'Author: David Decker', 'breakdance-quicknav' ),
                     'url'   => 'https://deckerweb.de/',
                 ),
-                'github'       => array(
+                'github' => array(
                     'title' => __( 'Plugin on GitHub', 'breakdance-quicknav' ),
                     'url'   => 'https://github.com/deckerweb/breakdance-quicknav',
                 ),
-                'buymeacoffee' => array(
+                'kofi' => array(
                     'title' => __( 'Buy Me a Coffee', 'breakdance-quicknav' ),
-                    'url'   => 'https://buymeacoffee.com/daveshine',
+                    'url'   => 'https://ko-fi.com/deckerweb',
                 ),
             );