react-navigation-redux-helps3.0中有两个重要的更新

1. reduxifyNavigator被改名为createReduxContainer

2. createReactNavigationReduxMiddleware的参数顺序发生了变化

export const middleware = createReactNavigationReduxMiddleware(
    'root',
    state => state.nav
);
//改为
export const middleware = createReactNavigationReduxMiddleware(
    state => state.nav,
    'root'
);