R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'PONG2'

PONG2::PONG2-R-api |  | PONG2 R API: Direct R Usage with Example Data | HTML | source | R code
PONG2::PONG2-basics |  | PONG2 Basics: Installation, Quick Start, and Core Usage | HTML | source | R code
PONG2::PONG2-imputation |  | PONG2 Imputation Workflow | HTML | source | R code
PONG2::PONG2-training |  | PONG2 Training: Building Custom KIR Prediction Models | HTML | source | R code