Happy to answer any questions.<p>Source: <a href="https://github.com/wwwtyro/caffeine" rel="nofollow">https://github.com/wwwtyro/caffeine</a><p>Tutorial: <a href="http://wwwtyro.net/2018/02/25/caffeine.html" rel="nofollow">http://wwwtyro.net/2018/02/25/caffeine.html</a>