title: Tour of app when opening it for the first time
body: <p>I am making an app, and I have written some code to tell me whether or not it is the first time that the user is opening it. If it is the first time, I want to display a a little "tour" of the app (similar to the app "Pages by Fifty Three", where the user swipes between pages, introducing you to the app). </p>
  
  <p>How do I display a similar welcome message in my app?</p>
  
  <p>TO CLARIFY: I have already got the code for determining whether or not this is the first time the app is launching. I just want to know how i get the initial welcome tour pop up, just like in the app, "Paper"?</p>