add description to errorbars.js
add description to errorbars.js

etpinard/plotly.js,aburato/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,etpinard/plotly.js,etpinard/plotly.js,plotly/plotly.js,iongroup/plotly.js,aburato/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,plotly/plotly.js