#546: update readme and note that 4.0.5 is the most recent version

Author: TheSnoozer

README.md

@@ -32,7 +32,7 @@ For more advanced users we also prepared a [guide to provide a brief overview of
 
 Versions
 --------
-The current version is **4.0.4** ([changelist](https://github.com/git-commit-id/git-commit-id-maven-plugin/issues?q=milestone%3A4.0.4)).
+The current version is **4.0.5** ([changelist](https://github.com/git-commit-id/git-commit-id-maven-plugin/issues?q=milestone%3A4.0.5)).
 
 You can check the available versions by visiting [search.maven.org](https://search.maven.org/artifact/pl.project13.maven/git-commit-id-plugin), though using the newest is obviously the best choice.