alignItemsVertically函数 竖直排列

Menu* mn = Menu::create(pItmMenupFlipX3D,pItmMenuPageTurn3D,
		pItmMenuLens3D, pItmMenuShaky3D,
		pItmMenuWaves3D, pItmMenuJumpTiles3D,
		pItmMenuShakyTiles3D, pItmMenuWavesTiles3D, NULL);
	mn->alignItemsVertically();
	this->addChild(mn);