Adding easy_install update for PySB install to Travis
Adding easy_install update for PySB install to Travis

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