Proper return on empty project dir.
Proper return on empty project dir.

paulovieira/tilemill-clima,tilemill-project/tilemill,florianf/tileoven,MappingKat/tilemill,fxtentacle/tilemill,mbrukman/tilemill,tilemill-project/tilemill,nyimbi/tilemill,mbrukman/tilemill,Zhao-Qi/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,MappingKat/tilemill,tizzybec/tilemill,tizzybec/tilemill,nyimbi/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,isaacs/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,Zhao-Qi/tilemill,mbrukman/tilemill,paulovieira/tilemill-clima,paulovieira/tilemill-clima,isaacs/tilemill,MappingKat/tilemill,paulovieira/tilemill-clima,fxtentacle/tilemill,florianf/tileoven,fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,makinacorpus/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,mbrukman/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill,florianf/tileoven,paulovieira/tilemill-clima,tizzybec/tilemill,fxtentacle/tilemill,tizzybec/tilemill,tilemill-project/tilemill,mbrukman/tilemill,makinacorpus/tilemill,isaacs/tilemill,fxtentacle/tilemill,nyimbi/tilemill,Zhao-Qi/tilemill,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill