title: Fullpage.js menu doesn't work
body: <p>I have problem with fullpage.js. I have a top menu with links to the selectors like that</p>
  
  <pre><code>            &lt;ul&gt;
                  &lt;li data-menuanchor="Onas"&gt;&lt;a href="#Onas"&gt;O nas&lt;/a&gt;&lt;/li&gt;
                  &lt;li data-menuanchor="Aktualnosci"&gt;&lt;a href="#Aktualnosci"&gt;Aktualności&lt;/a&gt;&lt;/li&gt;
                  &lt;li data-menuanchor="Treningi"&gt;&lt;a href="#Treningi"&gt;Treningi&lt;/a&gt;&lt;/li&gt;
                  &lt;li data-menuanchor="Partnerzy"&gt;&lt;a href="#Partnerzy"&gt;Partnerzy&lt;/a&gt;&lt;/li&gt;
                  &lt;li data-menuanchor="Kontakt"&gt;&lt;a href="#Kontakt"&gt;Kontakt&lt;/a&gt;&lt;/li&gt;
              &lt;/ul&gt;
  </code></pre>
  
  <p>and </p>
  
  <pre><code>    &lt;script&gt;
          $(document).ready(function() {
              $('#fullpage').fullpage({
                  sectionsColor: ['black','black','black','black', 'black'],
                  anchors: ['Onas', 'Aktualnosci', 'Treningi', 'Partnerzy', 'Kontakt'],
                  css3: true,
                  navigation: true,
                  menu: '#menu',
                  scrollingSpeed: 700,
                  sectionSelector: ".section",
              });
          });
      &lt;/script&gt;
  </code></pre>
  
  <p>My problem is when I click on element of menu, menu switch page one more than need. It good works when going back.</p>