Starring is fun!
Make sure that you are signed in your GitHub account, if not do so now!
Open this link and copy the entire script
Press ctrl+shift+I
Press ⌘+⌥+I
Click on the Console
tab in the developer tools to open it, then click on the textarea in the Console tab
Paste the script by pressing ctrl+V if you are on Windows or ⌘+V if are on macOS
Then press return / Enter