message: Defaulted renderMotion to children
diff: @@ -12,7 +12,7 @@ type SceneContext = {key: string, state: State, data: any, url: string, crumbs:
  type MotionStyle = {style: any, data: SceneContext, key: string, rest: boolean, progress: number, start: any, end: any };
  const NavigationMotion = ({unmountedStyle, mountedStyle, crumbStyle, duration = 300,
  - sharedElementMotion, renderScene, renderMotion, children}: NavigationMotionProps) => {
  + sharedElementMotion, renderScene, children, renderMotion = children}: NavigationMotionProps) => {
  const sharedElementRegistry = useRef(new SharedElementRegistry());
  const {stateNavigator} = useContext(NavigationContext);
  const [motionState, setMotionState] = useState<NavigationMotionState>({stateNavigator: null, keys: []});
  @@ -91,7 +91,6 @@ const NavigationMotion = ({unmountedStyle, mountedStyle, crumbStyle, duration =
  }
  const {stateContext: {crumbs, oldState}, stateContext} = stateNavigator;
  renderScene = typeof children === 'object' ? ({key}) => allScenes[key] : renderScene;
  - renderMotion = renderMotion || children;
  return (stateContext.state &&
  <SharedElementContext.Provider value={sharedElementRegistry.current}>
  <Motion<SceneContext>
  