1- Go to Tools -> Global Options -> Code -> Snippets -> Edit Snippets
.
2- Then paste the following code:
snippet mit
`r paste('# script.R')`
`r paste('#')`
`r paste('# The MIT License (MIT)')`
`r paste('#')`
`r paste('# Copyright (c)', format(Sys.time(), "%Y"), '<Your name>')`
`r paste('#')`