R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'openaq'

openaq::geospatial-queries |  | Geospatial queries | HTML | source |
openaq::ggplot2 |  | Integrating with ggplot2 | HTML | source |
openaq::openaq |  | Introduction to openaq | HTML | source |
openaq::plotting |  | Plotting | HTML | source |
openaq::querying-measurements |  | Querying measurements | HTML | source |
openaq::querying-rollups |  | Querying rolled up measurements | HTML | source |