title: Go to `AppStore` with button click
body: <p>When the user presses on a specific <code>UIButton</code> the app should open a song in <code>Spotify</code> app, if the app does not exist on the phone, i need it to take the user to the <code>AppStore</code> to the <code>Spotify</code> app so the user can download it.</p>
  
  <p>Ay idea how i can do so ?</p>
  
  <p>Thanks.</p>