The search string. This string is split (on spaces) into
individual words. Files and folders will be returned if they contain all
words in the search string.
path
Path in the user's Dropbox, relative to root
start
The starting index within the search results (used for paging).
The default for this field is 0
max_results
The maximum number of search results to return. The default
for this field is 100.
mode
Mode can take the option of filename, filename_and_content, or search deleted files with deleted_filename
dtoken
The Dropbox token generated by drop_auth. rdrop2
will try to automatically locate your local credential cache and use them.
However, if the credentials are not found, the function will initiate a new
authentication request. You can override this in drop_auth by
pointing to a different location where your credentials are stored.