版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/easy-pie-chart/2.1.6/angular.easypiechart.js
- https://cdn.bootcdn.net/ajax/libs/easy-pie-chart/2.1.6/angular.easypiechart.min.js
- https://cdn.bootcdn.net/ajax/libs/easy-pie-chart/2.1.6/easypiechart.js
- https://cdn.bootcdn.net/ajax/libs/easy-pie-chart/2.1.6/easypiechart.min.js
- https://cdn.bootcdn.net/ajax/libs/easy-pie-chart/2.1.6/jquery.easypiechart.js
- https://cdn.bootcdn.net/ajax/libs/easy-pie-chart/2.1.6/jquery.easypiechart.min.js