jQuery Chart Text Headers

Shield UI Chart allows positioning of primary and secondary text, to provide
better readability of the chart.
This is achieved by the primary and secondary headers in the control.
By default, they are disabled. Setting their text will allow them to be shown.
The sample below demonstrates one use:

primaryHeader: {
    text: 'Shield UI Chart',
    align: 'left'   
secondaryHeader: {
    text: 'Data Frequencies',
    align: 'center'

To change the default appearance, one can easily style the headers.