title: Create a button that can add website to homescreen
body: <p>I'm hoping there's a way of doing this, I'm sure I've seen it done before but can't for the life of me remember where!</p>
  
  <p>When a user visits a site via a mobile device, I want to create a button that says something like <kbd>install</kbd> or <kbd>add to homescreen</kbd>, once they click this button, the website is added to their homescreen, as it would be if they were to do it themselves using the menu.</p>
  
  <p>Is this possible? Googling around it's unclear if people have managed to accomplish this or not.</p>