title: Automatically update Instagram profile pic url on database
body: <p>on my database i save the information of users who sign up with Instagram on my application.
  When I want to display the profile pic of user i get the url (of the Instagram profile pic) that I've saved on my database and show it without problems.</p>
  
  <p>But, when user change his profile pic on Instagram the url that I've said says: "Content not found".</p>
  
  <p>It's possible to update automatically the Instagram user profil pic on my database? Any suggest?</p>