Mentioned 2 way data binding of DataSet in the Data Format sections i…

…n the docs (see almende#1099)

docs/graph2d/index.html

@@ -145,7 +145,6 @@ <h1>Graph2d</h1>
 
     <h2 id="Contents">Contents</h2>
     <ul>
-        <li><a href="#Overview">Overview</a></li>
         <li><a href="#Data_Format">Data Format</a>
             <ul>
                 <li><a href="#items">Items</a></li>
@@ -227,7 +226,7 @@ <h2 id="Loading">Loading</h2>
             Options is a name-value map in the JSON format. The available options
             are described in section <a href="#Configuration_Options">Configuration Options</a>.
             Groups is a vis <code>DataSet</code> containing groups. The available options and the method of construction
-            are described in section <a href="#Group_Options">Data Format</a>.
+            are described in section <a href="#Data_Format">Data Format</a>.
         </p>
         <pre class="prettyprint lang-js options">var graph = new vis.Graph2d(container [, data] [, groups] [, options]);</pre>
         For backwards compatibility, groups and options can be interchanged.
@@ -245,7 +244,7 @@ <h2 id="Loading">Loading</h2>
 
     <h2 id="Data_Format">Data Format</h2>
     <p>
-        Graph2d can load data from an <code>Array</code>, a <code>DataSet</code> or a <code>DataView</code>.
+        Graph2d can load data from an <code>Array</code>, a <code>DataSet</code> (offering 2 way data binding), or a <code>DataView</code> (offering one way data binding).
         Objects are added to this DataSet by using the <code>add()</code> function.
         Data points must have properties <code>x</code>, <code>y</code>, and <code>z</code>,
         and can optionally have a property <code>style</code> and <code>filter</code>.

docs/graph3d/index.html

@@ -199,7 +199,7 @@ <h2 id="Loading">Loading</h2>
 
   <h2 id="Data_Format">Data Format</h2>
   <p>
-    Graph3d can load data from an <code>Array</code>, a <code>DataSet</code> or a <code>DataView</code>.
+    Graph3d can load data from an <code>Array</code>, a <code>DataSet</code> (offering 2 way data binding), or a <code>DataView</code> (offering 1 way data binding).
     JSON objects are added to this DataSet by using the <code>add()</code> function.
     Data points must have properties <code>x</code>, <code>y</code>, and <code>z</code>,
     and can optionally have a property <code>style</code> and <code>filter</code>.

docs/timeline/index.html

@@ -209,19 +209,20 @@ <h2 id="Data_Format">Data Format</h2>
 
   <h3 id="items">Items</h3>
   <p>
-    The Timeline uses regular Arrays and Objects as data format.
-    Data items can contain the properties <code>start</code>,
+    For items, the Timeline accepts an Array, a DataSet (offering 2 way data binding),
+    or a DataView (offering 1 way data binding).
+    Items are regular objects and can contain the properties <code>start</code>,
     <code>end</code> (optional), <code>content</code>,
     <code>group</code> (optional), <code>className</code> (optional), 
     <code>editable</code> (optional), and <code>style</code> (optional).
   </p>
 
   <p>
-    A table is constructed as:
+    A DataSet is constructed as:
   </p>
 
 <pre class="prettyprint lang-js">
-var items = [
+var items = new vis.DataSet([
   {
     start: new Date(2010, 7, 15),
     end: new Date(2010, 8, 2),  // end is optional
@@ -343,7 +344,9 @@ <h3 id="items">Items</h3>
 
   <h3 id="groups">Groups</h3>
   <p>
-    Like the items, groups are regular JavaScript Arrays and Objects.
+    For the items, groups can be an Array, a DataSet (offering 2 way data binding),
+    or a DataView (offering 1 way data binding).
+
     Using groups, items can be grouped together.
     Items are filtered per group, and displayed as
 
@@ -1120,9 +1123,9 @@ <h2 id="Methods">Methods</h2>
       <td>none</td>
       <td>Set both groups and items at once. Both properties are optional. This is a convenience method for individually calling both <code>setItems(items)</code> and <code>setGroups(groups)</code>.
         Both <code>items</code> and <code>groups</code> can be an Array with Objects,
-        a DataSet, or a DataView. For each of the groups, the items of the
-        timeline are filtered on the property <code>group</code>, which
-        must correspond with the id of the group.
+        a DataSet (offering 2 way data binding), or a DataView (offering 1 way data binding).
+        For each of the groups, the items of the timeline are filtered on the
+        property <code>group</code>, which must correspond with the id of the group.
       </td>
     </tr>
 
@@ -1131,9 +1134,9 @@ <h2 id="Methods">Methods</h2>
       <td>none</td>
       <td>Set a data set with groups for the Timeline.
         <code>groups</code> can be an Array with Objects,
-        a DataSet, or a DataView. For each of the groups, the items of the
-        timeline are filtered on the property <code>group</code>, which
-        must correspond with the id of the group.
+        a DataSet (offering 2 way data binding), or a DataView (offering 1 way data binding).
+        For each of the groups, the items of the timeline are filtered on the
+        property <code>group</code>, which must correspond with the id of the group.
       </td>
     </tr>
 
@@ -1142,7 +1145,7 @@ <h2 id="Methods">Methods</h2>
       <td>none</td>
       <td>Set a data set with items for the Timeline.
         <code>items</code> can be an Array with Objects,
-        a DataSet, or a DataView.
+        a DataSet (offering 2 way data binding), or a DataView (offering 1 way data binding).
       </td>
     </tr>