devtools::use_package("assertthat")
devtools::use_package("prenoms")
devtools::use_package("ggplot2")
devtools::use_package("dplyr")
devtools::use_package("dygraphs")
devtools::use_package("tidyr")
devtools::use_package("readxl")
devtools::use_vignette("premierpackage")
devtools :: build_vignettes()
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