Merge remote-tracking branch 'upstream/master' into new_release

DESCRIPTION

@@ -19,6 +19,7 @@ Authors@R: c(person("Eduard", "Szöcs", role = "aut"),
     person("Andreas", "Scharmüller", role = "ctb"),        
     person("Eric R", "Scott", role = "ctb"),
     person("Jan", "Stanstrup", role = "ctb"),
+    person("João Vitor", "F Cavalcante", role = "ctb"),
     person("Gordon", "Getzinger", role = "ctb"),
     person("Tamás", "Stirling", email = "stirling.tamas@gmail.com", role = c("ctb", "cre")))
 Maintainer: Tamás Stirling <stirling.tamas@gmail.com>

R/nist.R

@@ -305,6 +305,12 @@ tidy_ritable <- function(ri_xml) {
 #'       were aggregated from}
 #'}
 #'
+#' @references NIST Mass Spectrometry Data Center, William E. Wallace, director,
+#'   "Retention Indices" in NIST Chemistry WebBook, NIST Standard Reference
+#'   Database Number 69, Eds. P.J. Linstrom and W.G. Mallard,
+#'   National Institute of Standards and Technology, Gaithersburg MD, 20899,
+#'   \url{https://doi.org/10.18434/T4D303}.
+#'
 #' @export
 #' @note Copyright for NIST Standard Reference Data is governed by the Standard
 #' Reference Data Act, \url{https://www.nist.gov/srd/public-law}.

README.Rmd

@@ -49,7 +49,7 @@ At least some of the data in the following sources is accesible through `webchem
 - [ChEBI](https://www.ebi.ac.uk/chebi/)
 - [Chemical Identifier Resolver (CIR)](http://cactus.nci.nih.gov/chemical/structure)
 - [Chemical Translation Service (CTS)](http://cts.fiehnlab.ucdavis.edu/)
-- [ChemIDplus](http://chem.sis.nlm.nih.gov/chemidplus/) 
+- [ChemIDplus](https://chem.nlm.nih.gov/chemidplus/) 
 - [ChemSpider](http://www.chemspider.com/) (requires an [API token]((https://developer.rsc.org/)))
 - [ETOX](http://webetox.uba.de/webETOX/index.do)
 - [Flavornet](http://www.flavornet.org)