yo(selector).bind(event, fn)
Attach a custom event to the selector. Different from yo(selector).on(), this event must by triggered by the method yo(selector).trigger().
See the example:
var myObj = yo('.myClass');
myObj.bind('some-user-event', function (e) {
console.log('Triggered');
});
// Trigger the event:
myObj.trigger('some-user-event');