[R-package] fix R examples and lgb.plot.interpretation()#3002

Merged

jameslamb merged 4 commits intomasterfrom jameslamb/fix/r-examples

Apr 21, 2020

+47-25

Commits on Apr 16, 2020

Commits on Apr 17, 2020

try data.table from conda-forge
StrikerRUS
authored

Commits on Apr 18, 2020

update FAQ
jameslamb
committed