I was aware these work even if I did not test them yet. You mean that we should add some documentation for directory mapping for debian, linux ,rpm ... ? If yes I can do it as soon as possible.

Correct me if I am wrong but adding directory mappings with such helper methods in Linux for example the user have to use the packageMapping method as explained in the linux.rst document ?
Since the type of packageMapping is `(File, String)* -> Unit` and the directory or contentOf helper methods are of type `String -> Seq[(File, String)]`,  we should be able to write something like the following to perform mappings in Linux by transforming the output of helper methods to the approriate type using the `: _*` operator.

```scala
packageMapping(directory("MyResourceDir"): _*) with....
```