title: Adding multiple series to Chart
body: <p>I'm currently trying to build a chart showing number of downloads of a product per date. 
  A sample of the current code is as follows:</p>
  
  <pre><code>var downloads = [  
    { value: 48, date: new Date("2013/11/01") },
    { value: 50, date: new Date("2013/11/02") },
    { value: 55, date: new Date("2013/11/03") },
    { value: 35, date: new Date("2013/11/04") }
  ];
  
  $("#chart").kendoChart({
    dataSource: {
      data: downloads
    },
    series: [{
      type: "line",
      aggregate: "avg",
      field: "value",
      categoryField: "date"
    }],
    categoryAxis: {
      baseUnit: "days",
      min: new Date("2013/10/31"),
      max: new Date("2013/11/10"),
      labels: {
        dateFormats: {
          days: "dd/MM"
        }
      }
    }  
  });
  </code></pre>
  
  <p>It works fine if I have to display data for one product only. How would I proceed to display download data for another product, i.e. adding another series to the chart?</p>