Use underscore _.indexOf() for IE compatibility.
Use underscore _.indexOf() for IE compatibility.

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