title: select2 multi-value only sending one value in POST
body: <p>Here is a snippet of my code:
  <a href="http://jsfiddle.net/natatkinson/xbWEb/">http://jsfiddle.net/natatkinson/xbWEb/</a></p>
  
  <p>Javascript:</p>
  
  <pre><code>$(document).ready(function () {
      $("#tags").select2({
          maximumSelectionSize: 3
      });
  
  });
  </code></pre>
  
  <p>HTML:</p>
  
  <pre><code>&lt;form name="form1" id="form1" action="" method="GET"&gt;
  &lt;fieldset&gt;
      &lt;legend&gt;Shoe Info&lt;/legend&gt;
      &lt;dl&gt;    &lt;dt&gt;Name:&lt;/dt&gt;
  
          &lt;dd&gt;
              &lt;input type="text" name="name" id="name" size="40" placeholder="Shoe name" required autofocus&gt;
          &lt;/dd&gt;
      &lt;/dl&gt;   &lt;dt&gt;Tags:&lt;/dt&gt;
  
      &lt;dd&gt;
          &lt;select multiple="" name="tags" id="tags" style="width:100%;"&gt;
              &lt;option value="0"&gt;Select Tags&lt;/option&gt;
              &lt;option value="2"&gt;racing flat&lt;/option&gt;
              &lt;option value="3"&gt;track spikes&lt;/option&gt;
              &lt;option value="1"&gt;trainer&lt;/option&gt;
          &lt;/select&gt;
      &lt;/dd&gt;
      &lt;/dl&gt;
  &lt;/fieldset&gt;
  &lt;p class="submit-buttons"&gt;
      &lt;input type="submit" class="button1" name="submit" id="submit" value="Add Shoes" /&gt;
  &lt;/p&gt;
  </code></pre>
  
  <p></p>
  
  <p>All that submits is 1 value, not a comma separated list like the documentation says.</p>