message: Added banner to timeline scene
diff: import React from 'react';
  import {NavigationLink} from 'navigation-react';
  +import Banner from './Banner';
  -export default ({stateNavigator}) => (
  +export default ({timeline: {id, name, username, logo, bio,
  + followers, following, tweets}, stateNavigator}) => (
  <div>
  - <h1>Timeline</h1>
  - <NavigationLink
  - stateKey="tweet"
  - stateNavigator={stateNavigator}>
  - Tweet
  - </NavigationLink>
  + <Banner title={name} stateNavigator={stateNavigator} />
  </div>
  );
  