Update README.md

Merge pull request #47 from Athilla/dev

fix: Use ResetOnReport when generated report for Prometheus

fix: Use ResetOnReport when generated report for Prometheus

Merge pull request #45 from AppMetrics/dev

dependency updates

Merge pull request #42 from megakid/perf/textWriter

Performance improments for prometheus text output

Merge pull request #41 from TDabasinskas/bugfix/metric_types

Lowercase the metric types (fixes #40)

use latest dotnet sdk, netcore update to 2.1.1, removing sdk install on appveyor build

[buildfix] bumping app metrics aspnet core version to lastest

updating copyright headers and adding sandbox directory props

#33 net core 2.1 updates, bumping app metrics version to latest

Merge pull request #35 from bdrupieski/feature/0.5-quantile-median