title: ChartJs title not showing
body: <p>I'm using ChartJS version 2.6.0. and I'm having some difficulties with the 'title' option of the chart. It's simply not showing on the rendered chart.
  I'm following the <a href="http://www.chartjs.org/docs/latest/configuration/title.html?h=title" rel="noreferrer">documentation</a>, and passing the title in as described:</p>
  
  <pre><code>var options = {
      type: 'line',
      data: data,
      title: {
          display: true,
          text: 'PLEASE DISPLAY FOR HEAVEN\'S SAKE'
      },
      responsive: true,
      bezierCurve: true,
      legend: {
          display: true,
          labels: {
              fontColor: 'rgb(255, 99, 132)'
          }
      },
      pointHitDetectionRadius: 1,
      events: ['click']
  }
  
  var canvas = document.getElementById("chartId");
  var ctx = canvas.getContext("2d");
  var chart = new Chart(ctx, options);
  </code></pre>
  
  <p>However, the title simply wont show. Here is a <a href="https://jsfiddle.net/ha19ozqy/89/" rel="noreferrer">fiddle</a> with a dougnut chart, that has the same issue. What am I missing here?</p>