Fire Google AdWords conversion pixel.

main.js

$('form').on('analytics-event', function(event, data) {
    // register Google AdWords conversion
    var google_conversion_id = 0; 
    var google_conversion_label = ""; 
    image = new Image(1,1); 
    image.src = 'http://www.googleadservices.com/pagead/conversion/' + google_conversion_id + '/?label=' + google_conversion_label + '&script=0&guid=ON';
});