fix: only update files if files.length>0 (PR#31)

This commit is to trigger semantic-release.

Author: dziraf

README.md

@@ -16,7 +16,7 @@ To see example usage see the [example-app](https://github.com/SoftwareBrothers/a
 
 ## License
 
-AdminJS is Copyright © 2020 SoftwareBrothers.co. It is free software, and may be redistributed under the terms specified in the [LICENSE](LICENSE.md) file.
+AdminJS is Copyright © 2021 SoftwareBrothers.co. It is free software, and may be redistributed under the terms specified in the [LICENSE](LICENSE.md) file.
 
 ## About SoftwareBrothers.co