title: Navigating Between Screens (Won't render button)
body: <p>thanks for the help firstoff. I am new to programming and am just trying to setup a way to navigate between screens. I used this link <a href="https://facebook.github.io/react-native/docs/navigation.html" rel="nofollow noreferrer">https://facebook.github.io/react-native/docs/navigation.html</a> to try and learn. Eventually, I resorted to just copy pasting the Navigator iOS into an empty javascript file to see if it would work. It will not render the button which should be the text, "Tap me to load the next scene." </p>
  
  <p>This is what it should look like:</p>
  
  <p><a href="https://i.stack.imgur.com/lpMOo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lpMOo.png" alt="enter image description here"></a></p>
  
  <p>My screen looks the same, but without that text. Please help.</p>
  
  <p><a href="https://i.stack.imgur.com/XuIlK.png" rel="nofollow noreferrer">This is a copy of the relevant code</a></p>