c(
    person("Winston", "Chang", email = "winston@rstudio.com", role = c("aut", "cre")),
    person("Yihui", "Xie", role = "ctb"),
    person("Francois", "Guillem", role = "ctb"),
    person("Barret", "Schloerke", role = "ctb"),
    person("Nicolas", "Perriault", role = "ctb", comment = "The CasperJS library")
    )
Takes screenshots of web pages, including Shiny applications and R
    Markdown documents.
PhantomJS (http://phantomjs.org) for taking
screenshots, ImageMagick (http://www.imagemagick.org) or
GraphicsMagick (http://www.graphicsmagick.org) and OptiPNG
(http://optipng.sourceforge.net) for manipulating images.
Winston Chang [aut, cre],
  Yihui Xie [ctb],
  Francois Guillem [ctb],
  Barret Schloerke [ctb],
  Nicolas Perriault [ctb] (The CasperJS library)