Update cluster example to use crimespotting.org.
Update cluster example to use crimespotting.org.

Laurian/mapsense.js,Andrey-Pavlov/polymaps,cksachdev/mapsense.js,mbostock/polymaps,shkfnly/mapsense.js,Cherchercher/polymaps,manueltimita/mapsense.js,RavishankarDuMCA10/mapsense.js,dillan/mapsense.js,mapsense/mapsense.js,gimlids/mapsense.js,makinacorpus/polymaps,simplegeo/polymaps,sfchronicle/mapsense.js,Andrey-Pavlov/polymaps,AndBicScadMedia/polymaps