Basically, what it does is check if theres a base cache and grab the files that changed , otherwise itll grab all files,
the run time of this on a 8m downlink with no base is 4hours for a full cache worth of 91.1m of data,
Usage: java -jar cgrab.jar
Datestamp format:new Date().toString()
credits : me, miss silabsoft for the js5 client i used