[docs] update sidebar

docs/_sidebar.md

@@ -3,12 +3,11 @@
 
 * Axis charts
   * [A basic chart](basic/basic_chart.md)
-  * [Adding more datasets](basic/multiple_datasets.md)
   * [Trends and Region Charts](basic/trends_regions.md)
+  * [Adding more datasets](basic/multiple_datasets.md)
 
 * Aggregation Charts
-  * []()
-  * []()
+  * [Aka Sliced Diagrams](basic/aggr_sliced_diags.md)
 
 * Update data
   * [Single Points]()
@@ -19,15 +18,14 @@
   * [Event hooks]()
 
 * Heatmap
-  * []()
-  * []()
+  * [Day-based Month-wise data](basic/heatmap.md)
 
 * Exporting
-  * []()
+  * [Image Files]()
 
-* API
+* Reference
   * [Configuration]()
-  * [Methods]()
+  * [API]()
 
 * [ChangeLog]()
 * [Wrappers]()

docs/basic/aggr_sliced_diags.md

@@ -0,0 +1 @@
+## Sliced Diagrams

docs/basic/heatmap.md

@@ -0,0 +1 @@
+## Day-based Month-wise data

docs/basic/multiple_datasets.md

@@ -6,9 +6,13 @@ A chart can have multiple datasets. In an axis chart, every dataset is represent
 data: {
     labels: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"],
     datasets: [
-		{ name: "Dataset 1", values: [18, 40, 30, 35, 8, 52, 17, -4] },
-		{ name: "Dataset 2", values: [30, 50, -10, 15, 18, 32, 27, 14] }
+      { name: "Dataset 1", values: [18, 40, 30, 35, 8, 52, 17, -4] },
+      { name: "Dataset 2", values: [30, 50, -10, 15, 18, 32, 27, 14] }
     ]
-},
+}
 ```
 <div class="demo" id="multi-dataset-line-bar"></div>
+
+All the `lineOptions` and `barOptions` apply to mutliple datasets as well.
+
+In [Aggregation Charts]() however, instead of being rendered individually, each data point in aggregated accross every dataset. We'll cover those next.

docs/basic/trends_regions.md

@@ -6,4 +6,6 @@ lineOptions: {
 },
 ```
 
-<div class="demo" id="line-trends-region-toggle"></div>
+<div class="demo" id="line-trends-region-toggle"></div>
+
+Next up, we'll see how multiple datasets play out in charts.