const PanelStack = createStackNavigator({
    Panel: PanelInner
}, {
    initialRouteName: 'Panel',
    headerLayoutPreset: 'center'
});



PanelStack.navigationOptions = {
    tabBarLabel: String.panel,
    tabBarIcon: ({focused}) => {
        return (
            <SimpleLineIcons size={wp(5)} name='grid' color={focused ? '#F95631' : '#8A8A8A'}/>
        )
    }
};