vega-lite test2

https://d3js.org/d3.v3.min.js

https://cdnjs.cloudflare.com/ajax/libs/vega/3.0.0-beta.30/vega.js

https://cdnjs.cloudflare.com/ajax/libs/vega-lite/2.0.0-beta.1/vega-lite.js

https://cdnjs.cloudflare.com/ajax/libs/vega-embed/3.0.0-beta.11/vega-embed.js