Google charts: Move legend position

I believe the syntax is like this:

var options = {
legend: 'bottom'
};

Source

EDIT: Actually, it seems to not yet be supported. Only right or none. Source

Try this..

legend: { position: 'top', alignment: 'end' },

Syntax would be -

  legend: { 
          position: 'bottom', 
        alignment: 'center' ,
        orientation: 'vertical',
    }