AQCU-1226: adding roxygen docu
AQCU-1226: adding roxygen docu

USGS-R/repgen,USGS-R/repgen,mhines-usgs/repgen,zmoore-usgs/repgen,zmoore-usgs/repgen,dpattermann-usgs/repgen,dpattermann-usgs/repgen,zmoore-usgs/repgen,mhines-usgs/repgen,dpattermann-usgs/repgen,USGS-R/repgen,mhines-usgs/repgen