title: Howto pass data to a other component with react native Navigator
body: <p>i'm using a Navigator component and want to pass data from a component to a other.
  here is some code.</p>
  
  <pre><code>renderScene(route, navigator) {
      var routeId = route.id;
      if (routeId === 'SplashPage') {
          return (
              &lt;SplashPage
          navigator={navigator} /&gt;
      );
      }
      if (routeId === 'Login') {
          return (
              &lt;Login
          navigator={navigator} /&gt;
      );
      }
      if (routeId === 'Home') {
          return (
              &lt;Home
          navigator={navigator} /&gt;
      );
      }
      ....
  </code></pre>
  
  <p>I want to pass data from login to home when i click on a button for example</p>
  
  <pre><code>this.props.navigator.replace({
          id: 'Home',
          passProps: {
              currentUser: this.user,
          }
      })
  </code></pre>
  
  <p>i would like to get the currentUser in the Home Component. I've tried some code that i found but nothing seem to work. </p>
  
  <p>This is whant i want to do :</p>
  
  <pre><code>class Home extends React.Component {
  constructor(props){
      super(props);
      this.currentUser = ????????
  }
  </code></pre>
  
  <p>If anyone can help me with this i would be grateful.</p>
  
  <p>Thanks</p>