Add a test for pmids and update to new api.
Add a test for pmids and update to new api.

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