Added JSONP support to API calls.
Added JSONP support to API calls.

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