1.0.0-RC

Feature

Development environment to use docker-compose.yml
Support the /metrics/find API to use at Grafana #1
Implement StatsService interface to be disable graphite stats service
Change project build tool from maven to gradle

Bug fix

Fix /render api not supported about asterisk query #3
Fix the duplication metric path to use /metrics/find API #5
Add the elasticsearch client ping config to keep safely connection between elasticsearch cluster #11