GitLab

update grafana to v5.1.0 and node-exporter to 0.16

task_high_memory_usage_1g missing task_name in BY

The task alert for memory shows blank $labels.container_label_com_docker_swarm_task_name values without the value in the BY statement

 - Docker for Mac compatibility

Update Grafana to 5.0.1 and update Prometheus dashboard.

ref #22

* updates: prometheus 1.8.2->2.0.0, alertmanager 0.9.1->0.13.0, grafana 4.6.0->4.6.3

fix #20

Added SMTP to Grafana & related docs.

Added env replacement in docker-entrypoint for serving on different port

Fix replace deprecated count_scalar with count

https://prometheus.io/docs/prometheus/2.0/migration/#promql

Fix some typos in README.md