How to add class path folder in Manifest

[GoogleCodeExporter]

What steps will reproduce the problem?
NA

What is the expected output? What do you see instead?
I need my actual jar class path something like having my conf folder as below

Class-Path: conf/ commons-lang-2.6.jar mail-1.4.7.jar 

my folder conf located with the myjar.one-jar.jar location.

conf
myjar.one-jar.jar

What version of onejar-maven-plugin are you using?

<version>1.4.4</version>
What is the output of "mvn -version" on your machine?
3.2.5

Please provide any additional information below.

Can you please help how can i refer external folder something like conf in my 
jar manifest classpath.

Original issue reported on code.google.com by sreekant...@gmail.com on 18 Feb 2015 at 11:28