title: Add shortcode to storefront header action
body: <p>I'm trying to add a shortcode to the header in a Wordpress Woocommerce site that uses the Storefront theme.</p>
  
  <p>The code that executes the content is...</p>
  
  <pre><code>do_action( 'storefront_header' );
  </code></pre>
  
  <p>And I'm trying to add the shortcode by using this in the functions.php file...</p>
  
  <pre><code>add_action( 'storefront_header', 'bkb_storefront_header_content', 40 );
  function bkb_storefront_header_content() {
      echo do_shortcode('[lsphe-header]');
  }
  </code></pre>
  
  <p>I also tried to echo out a piece of text, but this did not work either... </p>
  
  <pre><code>add_action( 'storefront_header', 'bkb_storefront_header_content', 40 );
  function bkb_storefront_header_content() {
      echo "HERE";
  }
  </code></pre>