Merge pull request #144 from EDiLD/fix_quick

further fixes to tax_name
started work on tax_rank -> get taxonomic rank of given taxon
added tax_rank function to get taxonomic rank of given taxon name.
updated examples
Merge pull request #145 from EDiLD/dev_misc

Dev misc
fixed parsing in the searchforanymatch and searchforanymatchpaged ITIS fxns, fixes #147
added gni_parse function, modified gnr_search, added iucn_getname, mofieid iucn_summary, changes man docs
added rankagg fxn, addresses #156