R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'gtfs2emis'

gtfs2emis::gtfs2emis_emission_factor |  | Exploring Emission Factors | HTML | source | R code
gtfs2emis::gtfs2emis_fleet_data |  | Preparing fleet data for gtfs2emis | HTML | source | R code
gtfs2emis::gtfs2emis_intro_vignette |  | Getting started | HTML | source | R code
gtfs2emis::gtfs2emis_non_exhaust_ef |  | Exploring Non-Exhaust Emission Factors | HTML | source | R code