Added link to elasticsearch reporter
3rd party links for MetricCatcher & metrics-reporter-config
Added 3rd party link to metrics-cassandra.
Fix for #490

MetricsModule is serialiazing wrong minute rates for timers
Merge pull request #491 from bandola/master

Fix for #490
fix #492
Merge pull request #486 from brndnmtthws/master

Added 3rd party link to metrics-cassandra.

[ci skip]
Merge branch 'at-3rd' of github.com:cburroughs/metrics into cburroughs-at-3rd

Conflicts:
	docs/source/manual/third-party.rst
Merge branch 'elasticsearch-reporter' of github.com:spinscale/metrics into spinscale-elasticsearch-reporter

Conflicts:
	docs/source/manual/third-party.rst
Update README.md

Link build status image to travis ci