README needs updating for searcher, possibly other functionality too

[DrPaulBrewer]

searcher has been updated to support options.orderBy

decorated-google-drive/index.js

Line 76 in c0c3ae2

let orderBy = options.orderby || 'folder,name,modifiedTime desc';

Also, setting options.recent to true will override orderBy and return only the most recent file.

At the time of posting, these changes are not reflected in the README documentation.