message: Update typescript definition for backward compatibility.
diff: @@ -71,21 +71,25 @@ export interface NavigationBarProps {
  titleColor?: string;
  /**
  - * Sets the toolbar logo on Android
  + * The logo
  */
  logo?: ImageURISource;
  /**
  - * Sets the overflow icon on Android
  + * The menu overflow image
  */
  overflowImage?: ImageURISource;
  /**
  - * Sets the navigation icon on Android
  + * The navigation button image
  */
  navigationImage?: ImageURISource;
  /**
  - * Handles navigation icon click event on Android
  + * Handles navigation button click events
  */
  onNavigationPress?: () => void
  + /**
  + * Determines when this item should appear in the navigation bar
  + */
  + show?: 'ifRoom' | 'never' | 'always';
  }
  /**
  @@ -93,6 +97,11 @@ export interface NavigationBarProps {
  */
  export class NavigationBar extends Component<NavigationBarProps> { }
  +/**
  + * Controls the appearance of the UI navigation bar
  + */
  +export class NavigaitonBarIOS extends Component<NavigationBarProps> {}
  +
  /**
  * Renders buttons in the left UI bar
  */
  @@ -103,6 +112,16 @@ export class LeftBar extends Component { }
  */
  export class RightBar extends Component { }
  +/**
  + * Renders buttons in the left UI bar
  + */
  +export class LeftBarIOS extends Component { }
  +
  +/**
  + * Renders buttons in the right UI bar
  + */
  +export class RightBarIOS extends Component { }
  +
  /**
  * Defines the Title Bar Props contract
  */
  @@ -118,6 +137,11 @@ export interface TitleBarProps {
  */
  export class TitleBar extends Component<TitleBarProps> { }
  +/**
  + * Renders titleView in the UI navigation bar
  + */
  +export class TitleBarIOS extends Component<TitleBarProps> { }
  +
  /**
  * Defines the Bar Button Props contract
  */
  