title: Column Google chart legend position issue
body: <p>I want to simply set the marked place legend on top of the graph.<br>
  The following is the Google Chart code which does not work:</p>
  
  <pre><code>var wrapper = new google.visualization.ChartWrapper({
    chartType: 'ColumnChart',
    dataTable: Dydata,
    containerId: 'visualization',
    legend: { position: 'bottom', alignment: 'start' },
    width: 520,
    height: 350
  });
  wrapper.draw();
  </code></pre>