Create a default DESCRIPTION file for a package.
create_description(path = ".", extra = getOption("devtools.desc"),
quiet = FALSE)path to package root directory
a named list of extra options to add to DESCRIPTION.
Arguments that take a list
if TRUE, suppresses output from this function.
To set the default author and licenses, set options
devtools.desc.author and devtools.desc.license. I use
options(devtools.desc.author = '"Hadley Wickham <h.wickham@gmail.com> [aut,cre]"',
devtools.desc.license = "GPL-3").