message: Rendered navigation bar buttons on web
diff: import React from 'react';
  -import {Text, View} from 'react-native';
  +import {Text, TouchableHighlight, View} from 'react-native';
  import {NavigationContext} from 'navigation-react';
  import {SharedElement as SharedElementWeb} from 'navigation-react-mobile';
  @@ -22,12 +22,21 @@ class NavigationBarWeb extends React.Component {
  }
  render() {
  return (
  + <View style={{
  + marginLeft: 15,
  + marginRight: 5,
  + flexDirection: 'row',
  + justifyContent: 'space-between',
  + alignItems: 'flex-end'
  + }}>
  <Text
  accessibilityRole="heading"
  aria-level="1"
  - style={{fontSize: 20, marginLeft: 15}}>
  + style={{fontSize: 20}}>
  {this.props.title}
  </Text>
  + {this.props.children}
  + </View>
  );
  }
  }
  @@ -38,8 +47,16 @@ const NavigationBar = props => (
  </NavigationContext.Consumer>
  )
  -const RightBar = () => null;
  -const BarButton = () => null;
  +const RightBar = ({children}) => children;
  +
  +const BarButton = ({title, onPress}) => (
  + <TouchableHighlight
  + underlayColor="#fff"
  + onPress={onPress}>
  + <Text>{title}</Text>
  + </TouchableHighlight>
  +
  +);
  class SharedElement extends React.Component{
  setNativeProps() {
  