小程序tabBar导航

 "tabBar": {
    "selectedColor": "#1296db",
    "list": [{
      "pagePath": "pages/index/index",
      "text": "首页",
      "iconPath": "images/ico-home.png",
      "selectedIconPath": "images/ico-home-d.png"
    },{
      "pagePath": "pages/setting/setting",
      "text": "设置",
      "iconPath": "images/ico-setting.png",
      "selectedIconPath": "images/ico-setting-d.png"
    },{
      "pagePath": "pages/help/help",
      "text": "帮助",
      "iconPath": "images/ico-help.png",
      "selectedIconPath": "images/ico-help-d.png"
    }]