title: will_paginate + Infinite Scroll plugin - doesn't display "Loading" message
body: <p>I use <code>will_paginate</code> gem in combination with <a href="http://www.infinite-scroll.com/infinite-scroll-jquery-plugin/" rel="nofollow noreferrer">Infinite Scroll jQuery Plugin</a> and the mechanism is working pretty well.
  The only exception is displaying info-message, when is loaded new content or when are already all data loaded - this message is not displayed.</p>
  <p>Here is my pagination structure generated by <code>will_paginate</code> gem:</p>
  <pre><code>&lt;div class=&quot;pagination&quot;&gt;
    &lt;span class=&quot;previous_page disabled&quot;&gt;&amp;#8592; Previous&lt;/span&gt; 
    &lt;em class=&quot;current&quot;&gt;1&lt;/em&gt; 
    &lt;a rel=&quot;next&quot; href=&quot;/articles?page=2&quot;&gt;2&lt;/a&gt; 
    &lt;a href=&quot;/articles?page=3&quot;&gt;3&lt;/a&gt; 
    &lt;a href=&quot;/articles?page=4&quot;&gt;4&lt;/a&gt; 
    &lt;a class=&quot;next_page&quot; rel=&quot;next&quot; href=&quot;/articles?page=2&quot;&gt;Next &amp;#8594;&lt;/a&gt;
  &lt;/div&gt;
  </code></pre>
  <p>And this is a setup of <code>Infinite Scroll plugin</code>:</p>
  <pre><code>  $container.infinitescroll({
      navSelector  : '.pagination',    // selector for the paged navigation 
      nextSelector : '.pagination a',  // selector for the NEXT link (to page 2)
      itemSelector : '.box-item',     // selector for all items you'll retrieve
      loading: {
          finishedMsg: 'No more pages to load.',
          img: 'http://i.imgur.com/6RMhx.gif'
        }
      },
  
      function( newElements ) {
        var $newElems = $( newElements ).css({ opacity: 0 });
        $newElems.imagesLoaded(function(){
          $newElems.animate({ opacity: 1 });
          $container.masonry( 'appended', $newElems, true ); 
        });
      }
    );
  </code></pre>
  <p>Everything should be set up by the manual pages, but I don't know why, the info message and loader are not loaded...</p>
  <p>Appreciate every help!</p>