* Rewrite getting started

Added Intro to grafana file

* Update getting_started.md

* Delete intro-to-grafana

* Adding and organizing intro content

* Update intro-to-grafana.md

* Update intro-to-grafana.md

* More work on geting started

* Update getting_started.md

* Update getting_started.md

* Update getting_started.md

* updated links

* Update dashboards.md

* Update dashboards.md

* Update getting_started.md