title: Not able to draw a Pie Chart with external csv file in HighCharts
body: <p>I tried  drawing a pie chart with external csv  in HIGHCHARTS, but its not coming up properly , instead of labels name  only slice is coming up.</p>
  
  <p>I have created a fiddle for this <a href="http://jsfiddle.net/BHUPENDRA1011/dsbvpkt0/5/" rel="nofollow">pie fiddle</a>, fiddle works for other chart options like 'bar','line' etc but fails for 'pie' option.</p>
  
  <p>below is the graph option that is set in fiddle :</p>
  
  <pre><code>var options = {
              chart: {
                  renderTo: 'container',
                  type: 'pie'
              },
              title: {
                  text: 'Vechicle Sales'                 
              },
  
              xAxis: {
                  categories: []
              },
              yAxis: {
                  title: {
                      text: 'Sales'
                  }
              },
              series: []
          };
  </code></pre>
  
  <p>Please let me know what would be reason behind this and what would be correct processing for csv file.</p>
  
  <p>Thanks</p>