2019 version

Presented at:

1. R Seminar Course for Plant Genomics PBGB | HRT 892 | Feb 2019 | https://jravilab.github.io/talk/2019-plb/
2. R-Ladies East Lansing & Chennai workshop at IITM | Mar 2019 | https://jravilab.github.io/talk/2019-iitm/
   cc: @arjunkrish & Praveena Mathews

Adapted from material by @arjunkrish.