Add function to produce plot of run times.
Add function to produce plot of run times.

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