title: Show the onboarding screen to first time user in ember
body: <p>I have a fb login integrated in my ember app.I have used ember-simple-auth to implement this.I am facing problem for the first time user.I have to show some onboarding screen to the first time user.For this my server is sending a sign_up flag as false for the first time user when he log in and when he finishes all the onboarding screen I will make an api call to server to make it true.From next time onwards if user log in again the sign_up is true and I should move him directly to feed screen rather than showing him the onboarding screen.</p>
  
  <p>I am not sure how to do this.Is there any good article about it?.Please share some code how to do it.Thanks in advance.You will be life saver.</p>