Interface to the VertNet collections database. 

NOTE THAT THIS IS NOT PACKAGED YET, BUT YOU CAN STILL USE THE FUNCTIONS OF COURSE. 

See the Wiki for examples of use cases for functions. 

VertNet API documentation here: 
-> https://github.com/VertNet/Darwin-Core-Engine/wiki/Prototype-Search-API

Documentation for Darwin Core Names and their short names
-> https://github.com/VertNet/Darwin-Core-Engine/wiki/Darwin-Core-short-names
-> Look up short names in rvertnet by typing: dcnames()