title: Programmatically change a chart title in highcharts
body: <p>I have a simple column chart that I update via AJAX, and all is working fine except I cannot change the actual title of the chart when I'm updating the data. </p>
  
  <p>I've tried the obvious - </p>
  
  
  
  <pre><code>chart.title="new title";
  //and
  chart.title.text="New title";
  </code></pre>
  
  <p>etc. - to no avail, and have had no success finding a solution online. </p>
  
  <p>Any help will be greatly appreciated.</p>