message: Added typings for new stack props
diff: @@ -6,6 +6,14 @@ import { StateNavigator, State } from 'navigation';
  * Defines the Navigation Stack Props contract
  */
  export interface NavigationStackProps {
  + /**
  + * indicates whether the app finishes with the stack
  + */
  + primary?: boolean;
  + /**
  + * Indicates whether to use Fragments on Android
  + */
  + fragmentMode?: boolean;
  /**
  * A Scene's title
  */
  