Add doc strings to new methods.
Add doc strings to new methods.

sorgerlab/indra,bgyori/indra,sorgerlab/belpy,johnbachman/indra,johnbachman/indra,sorgerlab/indra,sorgerlab/indra,sorgerlab/belpy,bgyori/indra,bgyori/indra,sorgerlab/belpy,johnbachman/indra