title: SKStore​Review​Controller, How to use it in a correct way?
body: <p>I have seen some answer but not satisfied with them and got some idea, but don't know how to use it properly, so that it will execute in proper way, though i think it should be used in App delegates <code>didFinishLaunching</code>, but i wanted to be sure before implement it in Live app without any hustle.
      <code>SKStore​Review​Controller</code> is only work for ios 10.3 what i read, could anybody explain with little bit of code in swift and objective c.</p>
  
  <p><strong>UPDATE:</strong></p>
  
  <p>Actually I'm confused about calling the method <code>request​Review()</code>, Where do i need to call this method? in <code>rootViewController</code>'s <code>viewDidLoad</code> or in <code>appDelegate</code>'s <code>didFinishlaunching</code> ?</p>
  
  <p>Thanks.</p>