re-add Sparkle info (with new details) for 0.6.0
re-add Sparkle info (with new details) for 0.6.0

This reverts commit 3d434464551def96156f9916144b12e08982ddd5.

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