Configuration is wrong on all examples

[qtipet]

In all sandbox examples, and the readme, the chartOptions are configured as follows:
chartOptions: { chart: { title: 'Company Performance', subtitle: 'Sales, Expenses, and Profit: 2014-2017' } }
Configurations are not applied this way. I suspected that there is an extra level in this, and tried without the chart, that way, the configurations applied, and the package works as expected:
chartOptions: { title: 'Company Performance', subtitle: 'Sales, Expenses, and Profit: 2014-2017' }
I'm not sure which way is your intention, but I suppose the documentations are incorrect here.