Caching UI and documentation

[wcornwell]

As I understand the code is designed to do this via the output option:

test <- create_taxonomic_update_lookup(c("Acacia suaveolens","Pinus coulterii",
                                       "Actinotus helianthii"),
                                     resources=resources, output = "cache.csv")

If "cache.csv" exists than it checks if there are new names to check and proceeds to check them, then overwrites the file with the superset.

Was that actually the intention @ehwenk? Are we happy with that?

[fontikar]

I think so @wcornwell but currently this doesn't work see:
#192 (comment)

There was discussion a while back to make this working but it got deprioritised. #140

I believe the functionality of "output = fille/path/to/save/output.csv" was a vestige of AusTraits workflows

[wcornwell]

95% of the code for it was still in there, and I think not so hard to get it working again--if we want that functionality.

If we don't want it anymore, I can remove.