Prometheus 1.3.1, Kube State Metrics v0.3.0

Bump Prometheus to v1.3.1
Added Kuebrnetes state metrics ==> https://github.com/kubernetes/kube-state-metrics
Fixed Grafana dashboard for EC2

Prometheus 1.3.0, Alertmanager 0.5.0

Merge pull request #1 from camilb/1.3

Bump version for prometheus and alertmanager. Fix configmaps and dashboards to work with the new versions.

v1.2.1

Update README.md