Fix for bug 245381: Grid from XML Binding sample doesn't load

Fixing issue in sample.

Author: MayaKirova

HTMLSamples/grid/xml-binding.html

@@ -64,6 +64,7 @@
                 dataSource: xmlDoc,
                 schema: xmlSchema 
             });
+            ds.dataBind();
 
             $("#grid").igGrid({
                 dataSource: ds //$.ig.DataSource defined above