Update Copyright

9468305 · 9468305 · commit 51a7ab2c795d · 2020-09-17T21:26:36.000+08:00
diff --git a/README.md b/README.md
@@ -33,7 +33,7 @@ License
 ----
 
 ```txt
-   Copyright 2019 ChenQi
+   Copyright 2017 ChenQi
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
