readme: add build status badge
readme: add build status badge
droolsjbpm/optaplanner,kunallimaye/optaplanner,oskopek/optaplanner,baldimir/optaplanner,kunallimaye/optaplanner,tkobayas/optaplanner,gsheldon/optaplanner,tkobayas/optaplanner,snurkabill/optaplanner,gsheldon/optaplanner,tomasdavidorg/optaplanner,droolsjbpm/optaplanner,oskopek/optaplanner,eshen1991/optaplanner,baldimir/optaplanner,bernardator/optaplanner,snurkabill/optaplanner,gsheldon/optaplanner,droolsjbpm/optaplanner,tkobayas/optaplanner,eshen1991/optaplanner,oskopek/optaplanner,gsheldon/optaplanner,eshen1991/optaplanner,baldimir/optaplanner,bernardator/optaplanner,tkobayas/optaplanner,tomasdavidorg/optaplanner,kunallimaye/optaplanner,snurkabill/optaplanner,bernardator/optaplanner,droolsjbpm/optaplanner,baldimir/optaplanner,oskopek/optaplanner,tomasdavidorg/optaplanner