add init log to check for https://github.com/uwdata/vega-lite-ui/issues/14
add init log to check for https://github.com/uwdata/vega-lite-ui/issues/14

hortonworks/vega-lite-ui,vivekratnavel/vega-lite-ui,hortonworks/vega-lite-ui,uwdata/vega-lite-ui,vivekratnavel/vega-lite-ui,uwdata/vega-lite-ui,vivekratnavel/vega-lite-ui,vega/vega-lite-ui,hortonworks/vega-lite-ui,vega/vega-lite-ui,vega/vega-lite-ui,uwdata/vega-lite-ui