Fix travis in Makefile
Fix travis in Makefile

kevinmontuori/nitrogen,joaohf/nitrogen,nitrogen/nitrogen,joaohf/nitrogen,choptastic/nitrogen,stuart-thackray/nitrogen,nitrogen/nitrogen,joaohf/nitrogen,kevinmontuori/nitrogen,choptastic/nitrogen,stuart-thackray/nitrogen,stuart-thackray/nitrogen,nitrogen/nitrogen,choptastic/nitrogen,kevinmontuori/nitrogen