Update LICENSE & add license info to README.md

JackNoordhuis · JackNoordhuis · commit a3afc57abddf · 2023-01-25T01:50:18.000+11:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 PocketMine Team
+Copyright (c) 2020-2023 NxtLvl Software Solutions
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
@@ -45,3 +45,6 @@ jobs:
           path: 'path/to/your/phpstan.phar'
           install-path: './bin'
 ```
+
+## License
+`nxtlvlsoftware/tar-ops-action` is open-sourced software licensed under the [MIT license](LICENSE).
