Update README.md

PaleCosmos · web-flow · commit da2ee1fed505 · 2020-05-25T22:01:44.000+09:00
diff --git a/README.md b/README.md
@@ -25,7 +25,7 @@
 # License
 
 ```
-   Copyright 2019 PaleCosmos
+   Copyright 2020 PaleCosmos
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
