rename schema to be consistent with vega 2
rename schema to be consistent with vega 2

vega/vega-lite,ellisonbg/vega-lite,vega/vega-lite,uwdata/vega-lite,vega/vega-lite,ellisonbg/vega-lite,uwdata/vega-lite,vega/vega-lite,vega/vega-lite,uwdata/vega-lite,uwdata/vega-lite,uwdata/vega-lite,ellisonbg/vega-lite