plugins/src/assembly/src.xml

<assembly>
    <id>build</id>
    <formats>
        <format>tar.gz</format>
        <format>zip</format>
    </formats>
  <includeBaseDirectory>true</includeBaseDirectory>
    <fileSets>
        <fileSet>
            <directory>.</directory>
            <outputDirectory></outputDirectory>
            <excludes>
                <exclude>*.ipr</exclude>
                <exclude>*.iws</exclude>
                <exclude>*.iml</exclude>
                <exclude>src/**</exclude>
                <exclude>**/site/**</exclude>                
                <exclude>**/target/**</exclude>
            </excludes>
        </fileSet>
    </fileSets>
</assembly>