~dricottone/pkgbuilds

ref: 2c89b3212eba780e5abfac939375735b28358fb7 pkgbuilds/r-tidyverse d---------
Added missing LICENSE
Initial commit

A long journey to packaging r-tidyverse. The current highest-level
packages that are successfully built are dtplyr, waldo, callr, and xml2.
A handful of others (brio, digest, praise, units, zeallot) are currently
freestanding but will become dependencies soon.