title: Menu does not show
body: <p>I'm on my way to build my first Wordpress theme. Now I hit a problem with my menu. It is shown in the source code, but not on the <a href="http://harnisch.pressebuero-schiel.de/" rel="nofollow noreferrer">website</a>.</p>
  
  <p>My code in the functions.php</p>
  
  <pre><code>function register_theme_menus() {
  
  register_nav_menus(
      array(
          'primary-menu'  =&gt; __( 'Primary Menu' )         
      )
  );
  
  }
  add_action( 'init', 'register_theme_menus' );
  </code></pre>
  
  <p>My code in the header-php</p>
  
  <pre><code>&lt;?php 
  
    $defaults = array(
      'container' =&gt; false,
      'theme_location'  =&gt; 'primary-menu',
      'menu_class'  =&gt; 'no-bullet'
    );
  
    wp_nav_menu( $defaults );
  
  ?&gt;
  </code></pre>
  
  <p>What's wrong here. Any ideas?</p>
  
  <p>Thanks! </p>