This function adds or updates the License badge to the README.Rmd.
This function reads the License field of the DESCRIPTION file. Ensure
that this field is correctly defined. See add_license() for further detail.
This function requires the presence of a DESCRIPTION file at the project
root. See add_description() for further detail.
Make sure that 1) a README.Rmd file exists at the project root and 2) it
contains a block starting with the line <!-- badges: start --> and ending
with the line <!-- badges: end -->.
Don't forget to re-render the README.md.
Usage
add_license_badge(quiet = FALSE)
Value
A badge as a markdown expression.
Arguments
quiet
A logical value. If TRUE messages are deleted. Default is
FALSE.