title: custom parsley form validation not working
body: <p>I have a form with one field that needs a custom validator for which I'm trying to use Parsley v2.2.0-rc1 and jQuery 2.1.4.  I have confirmed that both jQuery and Parsley are loading (in that order) using my browser's developer tools to ensure I get HTTP 200 for all files.  Here's what I'm trying to do:</p>
  
  <pre><code>&lt;html&gt;
    &lt;form id="stuff" data-parsley-validate&gt;
      &lt;textarea id="stuffList" data-parsley-stuffList&gt;&lt;/textarea&gt;
      &lt;input type="submit"&gt;Submit&lt;/input&gt;
    &lt;/form&gt;
    &lt;script type="text/javascript" src="jquery-2.1.4.min.js"&gt;&lt;/script&gt;
    &lt;script type="text/javascript" src="parsley.min.js"&gt;&lt;/script&gt;
    &lt;script type="text/javascript" src="mycode.js"&gt;&lt;/script&gt;
  &lt;/html&gt;
  
  mycode.js:
    jQuery(document).ready(function($) {
      window.Parsley.addValidator('stuffList', {
        requirementType: 'string',
        validateString: function(value) {
                          console.log('Starting validation');
                          if (something) {
                            return true;
                          } else {
                            return false;
                          }
                        },
        messages: {en: 'That stuff is not valid.'},
      });
    });
  </code></pre>
  
  <p>When I click submit, I don't even get the console.log message to let me know that the validation function was even called.  What am I doing wrong?</p>
  
  <p>P.S. I've tried it both with the parsley-data-validate in the form tag and not, and with some value set for data-parsley-stuffList and not.  None of those variations cause the validator to execute.</p>