message: Updated navigation react readme to component api
  Removed the ReactDOM render because it's different in React 18. No point including it here
diff: @@ -8,6 +8,8 @@ const stateNavigator = new StateNavigator([
  { key: 'world' }
  ]);
  +stateNavigator.start();
  +
  const Hello = () => (
  <NavigationLink
  stateKey="world"
  @@ -23,22 +25,10 @@ const World = () => {
  );
  };
  -const { hello, world } = stateNavigator.states;
  -
  -hello.renderScene = () => <Hello />;
  -world.renderScene = () => <World />;
  -
  -stateNavigator.start();
  -
  -const App = () => {
  - const { state, data } = useContext(NavigationContext);
  - return state.renderScene(data);
  -};
  -
  -ReactDOM.render(
  +const App = () => (
  <NavigationHandler stateNavigator={stateNavigator}>
  - <App />
  - </NavigationHandler>,
  - document.getElementById('root')
  + <SceneView active="hello"><Hello /></SceneView>
  + <SceneView active="world"><World /></SceneView>
  + </NavigationHandler>
  );
  ```
  