Add bel.rb dependencies to TRAVIS
Add bel.rb dependencies to TRAVIS

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