License Issue for R-Packages

[Z Saifullah <zmsaif%nmsu.edu@localhost>]

Hello 

Can anyone explain how do i incorporate the license file for R-packages, where there is an additional file with copy right holders name on it, like this one. 

https://cran.r-project.org/web/packages/httr/index.html
DO i need to create new license file? or can use only mit? or actually how can i do that.

Thank you for your cooperation. 

Thanks

Amil