Create CMD instruction for rendering a markdown file

Schema: R [--options] -e \"rmarkdown::render(input = [path], output_format = [output_format]\""

CMD_Render(path, options = character(0),
  output_format = rmarkdown::html_document(), output_dir = NULL,
  output_file = NULL, vanilla = TRUE)

Arguments

path	The name of the R markdown file that should run on startup, or a path relative to the working directory
options	(optional) Options or flags to be passed to Rscript
output_format	The output format as in `rmarkdown::render(...)`
output_dir	The output dir as in `rmarkdown::render(...)`
output_file	The output file name as in `rmarkdown::render(...)`
vanilla	Whether R should startup in vanilla mode. Default: TRUE

A CMD instruction