src/assembly/src.xml

<assembly>
  <id>src</id>
  <formats>
    <format>tar.gz</format>
    <format>tar.bz2</format>
    <format>zip</format>
  </formats>
  <fileSets>
    <fileSet>
      <directory>${project.basedir}</directory>
      <outputDirectory>/</outputDirectory>
      <useDefaultExcludes>true</useDefaultExcludes>
      <includes>
        <include>src/**</include>
        <include>pom.xml</include>
        <include>sample-build-test.pom</include>
        <include>sample.build.xml</include>
        <include>README*</include>
      </includes>
    </fileSet>
    <fileSet>
      <directory>${project.build.outputDirectory}/META-INF</directory>
      <outputDirectory>/</outputDirectory>
      <useDefaultExcludes>true</useDefaultExcludes>
      <includes>
        <include>LICENSE*</include>
        <include>NOTICE*</include>
      </includes>
    </fileSet>
  </fileSets>
</assembly>