added all ritis functionality to the function itis
can't access internal itis functions, trying :::
added export to all itis functions so they will be seen within the itis function itself
edited itis documentation a bit, made getkey internal fxn, so won't show up in the manual
added fxn eol_dataobjects
added two functions for the catalog of life API (addresses issue #69)
Add is.invasive fnc

Edited Read me, add function and man page.
Merge pull request #73 from ibartomeus/master

Add is.invasive function, written by ibartomeus
edited readme
edited readme
Merge remote-tracking branch 'upstream/master'
changed name, formatting, simplify = TRUE as default.
added roxygen documentation for gisd_isinvasive
added Ignasi Bartomeus as author to DESCRIPTION-File
Merge pull request #74 from EDiLD/fix_quick

added roxygen and some formatting to isinvasive
fixed example to correct name for gisd_isinvasive, and printed message was off by 1
fixed itis as namespaces changed by ITIS, itis_name to tax_name (with NCBI now), fixed error in get_tsn
added NCBI2R as an import in DESC file for the tax_name fxn
fixed bug. If the iucn API return nothing then NA is returned
Merge pull request #76 from EDiLD/fix_quick

fixed bug. If the iucn API return nothing then NA is returned