To cite package ‘anicon’ in publications use:

  Tanaka E (2019). _anicon: Animated icons for R Markdown and Shiny_. R
  package version 0.1.0, <https://github.com/emitanaka/anicon>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {anicon: Animated icons for R Markdown and Shiny},
    author = {Emi Tanaka},
    year = {2019},
    note = {R package version 0.1.0},
    url = {https://github.com/emitanaka/anicon},
  }