Hints for feedreader in universe

Hints

• asv-screenshot-media-url-not-secure
  org.gnome.FeedReader.appdata.xml:145 - http://jangernert.github.io/FeedReader/images/gallery/Screenshot1.png
  Consider using a secure (HTTPS) URL to reference this screenshot image or video.
• asv-description-first-word-not-capitalized
  org.gnome.FeedReader.appdata.xml:345 -
  The description line does not start with a capitalized word, project name or number.