message: slight update to Area Chart demos
diff: @@ -1462,6 +1462,13 @@ function genSlides_Chart(pptx) {
  slide.addNotes('API Docs: https://gitbrent.github.io/PptxGenJS/docs/api-charts.html');
  slide.addTable( [ [{ text:'Chart Examples: Area Chart', options:gOptsTextL },gOptsTextR] ], gOptsTabOpts );
  + var arrDataAreaSm = [
  + {
  + name : 'Small Samples',
  + labels: ['Q1','Q2','Q3','Q4'],
  + values: [15, 46, 31, 85]
  + }
  + ];
  var arrDataTimeline2ser = [
  {
  name : 'Actual Sales',
  @@ -1479,9 +1486,13 @@ function genSlides_Chart(pptx) {
  var optsChartLine1 = {
  x:0.5, y:0.6, w:'45%', h:3,
  catAxisLabelRotate: 45,
  - catAxisOrientation:'maxMin', valAxisOrientation:'maxMin'
  + fill: 'D1E1F1',
  + chartColors: ['0088CC'],
  + chartColorsOpacity: 25,
  + dataBorder: {pt:2, color:'FFFFFF'},
  + showValue: true
  };
  - slide.addChart( pptx.charts.AREA, arrDataTimeline2ser, optsChartLine1 );
  + slide.addChart( pptx.charts.AREA, arrDataAreaSm, optsChartLine1 );
  // TOP-RIGHT
  var optsChartLine2 = { x:7, y:0.6, w:'45%', h:3,
  @@ -1489,6 +1500,7 @@ function genSlides_Chart(pptx) {
  chartColorsOpacity: 25,
  valAxisLabelRotate: 5,
  dataBorder: {pt:2, color:'FFFFFF'},
  + showValue: false,
  fill: 'D1E1F1'
  };
  slide.addChart( pptx.charts.AREA, arrDataTimeline2ser, optsChartLine2 );
  