source.xml

<assembly
  xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd"
>
  <id>source</id>
  <formats>
    <format>zip</format>
  </formats>
  <fileSets>
    <fileSet>
      <directory>src</directory>
    </fileSet>
    <fileSet>
      <directory>test</directory>
    </fileSet>
    <fileSet>
      <directory>assemble</directory>
    </fileSet>
  </fileSets>
  <files>
    <file>
      <source>target/${project.artifactId}</source>
      <outputDirectory>/</outputDirectory>
    </file>
    <file>
      <source>pom.xml</source>
      <outputDirectory>/</outputDirectory>
    </file>
    <file>
      <source>README.md</source>
      <outputDirectory>/</outputDirectory>
    </file>
    <file>
      <source>INSTALL</source>
      <outputDirectory>/</outputDirectory>
    </file>
    <file>
      <source>COPYING</source>
      <outputDirectory>/</outputDirectory>
    </file>
    <file>
      <source>COPYING-GPL</source>
      <outputDirectory>/</outputDirectory>
    </file>
    <file>
      <source>COPYING-MIT</source>
      <outputDirectory>/</outputDirectory>
    </file>
  </files>
</assembly>