Update README.md

Author: heetbeet

README.md

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 # GitHub-Desktop-context-menu
-Add a context menu for Github Desktop to Windows explorer
+Run `GitHub Desktop context menu.cmd` to add a Github context menu to your explorer
+
+![image](https://user-images.githubusercontent.com/4103775/125922374-0e0bde79-b349-4882-98bd-cd06e4bc680e.png)
+
+
+# Configuration
+By clicing on `Keep...` or `Discard...` you can choose to either keep a single entry or remove the menu all together
+
+![image](https://user-images.githubusercontent.com/4103775/125923151-2e187a68-7b1a-4767-9bd6-4bcce28539d8.png)
+