creation of rrd file worked!
add several options
random numbers
refactoring with closure
refactoring with block
add --from option
add --md5 option
introduce rrdcached.
add --daemon option for benchmark_rrd.pl
add --rrdcached option for growhtforecast.pl
add benchmark_rrd.md
Merge pull request #30 from sonots/rrdcached

rrdcached support (--rrdcached option)