Update README.md

Author: lianzhan1106

README.md

@@ -69,7 +69,7 @@ react-native link sensorsdata-analytics-react-native
 | [![《数据驱动：从方法到实践》](https://opensource.sensorsdata.cn/wp-content/uploads/data_driven_book_1.jpg)](https://item.jd.com/12322322.html) | [![《Android 全埋点解决方案》](https://opensource.sensorsdata.cn/wp-content/uploads/Android-全埋点thumbnail_1.png)](https://item.jd.com/12574672.html) | [![《iOS 全埋点解决方案》](https://opensource.sensorsdata.cn/wp-content/uploads/iOS-全埋点thumbnail_1.png)](https://item.jd.com/12867068.html)
 
 ## License
-Copyright 2015－2020 Sensors Data Inc.
+Copyright 2015－2021 Sensors Data Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at