title: How to append custom link with wp_nav_menu function in wordpress
body: <p>Suppose I have 2 pages Contact, About.</p>
  
  <pre><code>wp_nav_menu( array( 'show_home'=&gt;true ) ) 
  </code></pre>
  
  <p>will display three links as 'Home', 'Contact', 'About'. 
  Here I would like to add one more custom link as 'Example' and navigate to www.example.com</p>
  
  <p>Excepted result</p>
  
  <pre><code>&lt;div class="menu"&gt;
      &lt;ul&gt;
          &lt;li&gt;
              &lt;a title="Home" href="http://www.test.com/"&gt;Home&lt;/a&gt;
          &lt;/li&gt;
          &lt;li class="page_item page-item-2 current_page_item"&gt;
              &lt;a title="About" href="http://www.test.com/?page_id=2"&gt;About&lt;/a&gt;
          &lt;/li&gt;
          &lt;li&gt;
              &lt;a title="Home" href="http://www.test.com/?page_id=3"&gt;Home&lt;/a&gt;
          &lt;/li&gt;
          &lt;li&gt;
              &lt;a title="Home" href="http://www.example.com/?page_id=3"&gt;Example&lt;/a&gt;
          &lt;/li&gt;
      &lt;/ul&gt;
  &lt;/div&gt;
  </code></pre>