Add additional text to large data example

Author: jakezatecky

examples/src/index.html

@@ -33,6 +33,7 @@ <h2>Pessimistic Toggle Example</h2>
       <div id="pessimistic-toggle-example"></div>
 
       <h2>Large Data Example</h2>
+      <p>The checkbox tree is capable of supporting a large number of nodes at once.</p>
       <div id="large-data-example"></div>
 
       <footer class="site-footer">