added install.R. runtime.txt, and R notebook#129

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abernauer wants to merge 2 commits intomlpack:masterfrom abernauer:MovieLens-prediction-notebook-R

+939

Commits on Oct 21, 2020

added install.R. runtime.txt, and R notebook
abernauer
committed

Commits on Oct 28, 2020

removed install.packages(mlpack)
abernauer
committed