Merge pull request #309 from fmichonneau/pesi

adding spaces to package versions
fixes minor typos in documentation
added man file for pesi generic to describe fxns avail, etc
Merge pull request #312 from fmichonneau/fix_doc

fixes minor typos in documentation
moved helper fxns from worms_children to worms_utils
fixed worms_records to do fuzzy search, #310
Merge branch 'pesi' of https://github.com/ropensci/taxize into pesi