Fix bug in heatmap point add

src/heatContainer.js

@@ -26,7 +26,6 @@ function init (elementId, logString) {
       start: [1, logData.length],
       connect: true,
       margin: 1,
-      step: 1,
       range: {
           'min': 1,
           'max': logData.length

src/lineHeatmap.js

@@ -18,9 +18,12 @@ export default class LineHeatmap {
 
   setTrackData (data) {
     this.heatmap.setData({
-      max: Number.MAX_SAFE_INTEGER,
+      max: 0,
       min: 0,
-      data: data
+      data: []
+    });
+    data.forEach(point => {
+      this.heatmap.addData(point);
     });
   }
 }