Hints for pipewalker in universe

Hints

• asv-summary-has-dot-suffix
  net.sourceforge.pipewalker.pipewalker.metainfo.xml:6 - A puzzle game to combine components into a single circuit.
  The component summary should not end with a dot (`.`).
• asv-content-rating-missing
  net.sourceforge.pipewalker.pipewalker.metainfo.xml -
  This component has no `content_rating` tag to provide age rating information. You can generate the tag data online by answering a few questions at https://hughsie.github.io/oars/