title: React native navigation example
body: <p>I want to implement navigation betwen these screens;</p>
  
  <p>I want to have 5 screens;
  1 is Login screen(first screen when user open app)
  2 is Main screen with 2 bottom tabs in it...Each of these two tabs will have specific header.
  3&amp;4 is some other screens</p>
  
  <p>I don't find any solution on google with these...also I was trying to implement this but I don't manage to do it.</p>
  
  <p>Can anyone please give me just example how to implement stacknavigator and createbottomnavigation.</p>