Fix push screen from SideMenu

example-redux/src/screens/SecondTabScreen.js

 
     this.props.navigator.push({
       title: "Pushed from SideMenu",
-      screen: parts[2],
+      screen: 'example.PushedScreen',
       passProps: {
         str: 'This is a prop passed in \'navigator.push()\'!',
         obj: {