Adding in sensu client and check data to victorops payload.
Merging in master
Merge pull request #483 from nstielau/victorops_payload

Adding in sensu client and check data to victorops payload.
[statsd-extension] a statsd implementation for sensu clients \o/
Add twemproxy to graphite plugin.
[statsd-extension] rubocop adjustment, ColonMethodCall
Merge pull request #484 from portertech/statsd-extension

A Statsd implementation for Sensu clients \o/
[statsd-extension] need to append \n to metric batch before sending
Merge pull request #486 from portertech/statsd-extension

Statsd extension: Need to append \n to metric batch before sending
elb full metrics of an ELB
Corrected the parsing of the use_ami_role setting from sns.json.
This statement
  settings['sns']['use_ami_role'] || true
doesn't work for {"use_ami_role":false} because false || true == true.
As a result, useAmiRole would always return true no matter what the
setting was in sns.json.
Introduced a nil check instead.
[system_profile] created a system_profile extension to produce metrics from /proc/*
[system_profile] added /proc/loadavg 1, 5, and 15 min
[system_profile] added /proc/net/dev for network metrics
[system_profile] added /proc/meminfo for memory/swap metrics
[system_profile] change default chunk size to 4096
[system_profile] added header
Merge pull request #488 from portertech/system_profile

Created a system_profile extension, /proc/* metrics
Add Fluentd notification handler
Fixed rubocop test offences