Simplify R dep installation (#362)
Simplify R dep installation (#362)

aglne/lenskit,kluver/lenskit,tajinder-txstate/lenskit,vaibhav345/lenskit,blankazucenalg/lenskit,vaibhav345/lenskit,tajinder-txstate/lenskit,linjunleo/lenskit,amaliujia/lenskit,vaibhav345/lenskit,binweiwu/lenskit,binweiwu/lenskit,kluver/lenskit,aglne/lenskit,linjunleo/lenskit,vijayvani/Lenskit,kluver/lenskit,kluver/lenskit,kluver/lenskit,blankazucenalg/lenskit,martinlaz/lenskit,amaliujia/lenskit,chrysalag/lenskit,vaibhav345/lenskit,martinlaz/lenskit,chrysalag/lenskit,tajinder-txstate/lenskit,vijayvani/Lenskit,tajinder-txstate/lenskit