Provide pessimistic toggle example

Author: jakezatecky

examples/dist/index.html

@@ -24,7 +24,11 @@ <h2 class="project-tagline">A simple, yet elegant checkbox treeview for React</h
 		<section class="main-content">
 			<h1>Examples</h1>
 			<h2>Basic Example</h2>
-			<div id="mount"></div>
+			<div id="basic-example"></div>
+
+			<h2>Pessimistic Toggle Example</h2>
+			<p>Try clicking a partially-checked node. Instead of select all children, the pessimistic model will uncheck them.</p>
+			<div id="pessimistic-toggle-example"></div>
 
 			<footer class="site-footer">
 				<span class="site-footer-owner">