File _link of Package rubygem-kramdown

<link project="devel:languages:ruby:extensions" package="rubygem-kramdown" baserev="3eebe1a53bd0b37e0a5efa9cc1a2faa5">
  <patches>
    <delete name="kramdown-2.4.0.gem"/>
    <apply name="project.diff"/>
  </patches>
</link>