title: Install unlisted app shopify
body: <p>I've looked everywhere but can't find any documentation on how create an "Install App" button like this on <a href="http://storetasker.com/" rel="nofollow noreferrer">http://storetasker.com/</a> (not my site, don't recommend them, just an example)</p>
  
  <p>Sorry for the short question, I usually refuse to post on here without what showing what I've already tried but I can't even find where to start since the magic that happens on the aboves <code>/merchant-install</code> </p>
  
  <p>The app is unlisted; that is - shopify won't host it</p>