注意事项：
1. list中，第一条是主页，不然显示不了tabBar;
2. list中至少有2条，最多有5条；
3. 默认颜色用“color”，被选中的颜色用“selectedColor”
"tabBar": { "selectedColor": "#42B983", "list": [{ "pagePath": "pages/search/search", "text": "查询", "iconPath": "images/search.png", "selectedIconPath": "images/search-active.png" }, { "pagePath": "pages/base/base", "text": "个人", "iconPath": "images/companion.png", "selectedIconPath": "images/companion-active.png" }] }
