Documents:
https://developers.google.com/analytics/devguides/reporting/core/dimsmets
https://developers.google.com/analytics/devguides/reporting/embed/v1/devguide
https://ga-dev-tools.appspot.com/embed-api/basic-dashboard/
Test query
https://ga-dev-tools.appspot.com/query-explorer/
https://developers.google.com/apis-explorer/#p/analytics/v3/analytics.data.ga.get
Embedded GA chart in other website
https://developers.google.com/analytics/devguides/reporting/embed/v1/component-reference#datachart-options
Visualization
https://developers.google.com/chart/
Create a new:
https://ga-dev-tools.appspot.com/embed-api/custom-components/
