for non-standard things in the check directory

Maintainer: ‘Mikkel Freltoft Krogsholm <mikkel@56n.dk>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = c("Mikkel", "Freltoft"),
                    family = "Krogsholm",
                    role = c("aut", "cre"),
                    email = "mikkel@56n.dk")
as necessary.
Found the following files/directories:
  ‘my_new_social_media_plot.png’
Maintainer: ‘Mikkel Freltoft Krogsholm <mikkel@56n.dk>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = c("Mikkel", "Freltoft"),
                    family = "Krogsholm",
                    role = c("aut", "cre"),
                    email = "mikkel@56n.dk")
as necessary.
Found the following files/directories:
  ‘my_new_social_media_plot.png’
Found the following files/directories:
  ‘my_new_social_media_plot.png’
Found the following files/directories:
  ‘my_new_social_media_plot.png’
Found the following files/directories:
  ‘my_new_social_media_plot.png’
Found the following files/directories:
  ‘my_new_social_media_plot.png’