add ruby 2.3.0 to travis
add ruby 2.3.0 to travis

ISSIntel/brcobranca,scupen/brcobranca,zaeznet/brcobranca,kivanio/brcobranca,prem-prakash/brcobranca,ronyvieira/boletos,scupen/brcobranca,isabellaSantos/brcobranca