godeps: pull in go-metrics

Godeps/Godeps.json

.../_workspace/src/github.com/rcrowley/go-metrics/.gitignore

Godeps/_workspace/src/github.com/rcrowley/go-metrics/LICENSE

...s/_workspace/src/github.com/rcrowley/go-metrics/README.md

...om/rcrowley/go-metrics/cmd/metrics-bench/metrics-bench.go

...crowley/go-metrics/cmd/metrics-example/metrics-example.go

...thub.com/rcrowley/go-metrics/cmd/never-read/never-read.go

.../_workspace/src/github.com/rcrowley/go-metrics/counter.go

...kspace/src/github.com/rcrowley/go-metrics/counter_test.go

...ps/_workspace/src/github.com/rcrowley/go-metrics/debug.go

...orkspace/src/github.com/rcrowley/go-metrics/debug_test.go

Godeps/_workspace/src/github.com/rcrowley/go-metrics/ewma.go

...workspace/src/github.com/rcrowley/go-metrics/ewma_test.go

...ps/_workspace/src/github.com/rcrowley/go-metrics/gauge.go

...space/src/github.com/rcrowley/go-metrics/gauge_float64.go

.../src/github.com/rcrowley/go-metrics/gauge_float64_test.go

...orkspace/src/github.com/rcrowley/go-metrics/gauge_test.go

..._workspace/src/github.com/rcrowley/go-metrics/graphite.go

...space/src/github.com/rcrowley/go-metrics/graphite_test.go

...rkspace/src/github.com/rcrowley/go-metrics/healthcheck.go