Merge pull request #33 from lookio/master

Adding rps from @mhald as an optional module to be deployed
rps integration with statsd
udp packets are logged as statsd gaguges when using rps
RPS tracking for all storage and udp packets
Merge pull request #34 from lookio/rps_target

Statsd RPS metric working for storage and UDP.
adding an index on severity, will help history_optimizer
adding the rps counter for udp received
Merge pull request #35 from lookio/rps_target

One more RPS metric and a new index for mnesia
adding the download url to the vagrant file
Merge pull request #36 from lookio/rps_target

adding the download url to the vagrant file