title: How to make select2 work with jquery.validation plugin?
body: <p>I'm trying to validate select2 field using jquey.validation plugin but nothing happens.</p>
  
  <p>I want to make select required field.</p>
  
  <p>I'm using this custom validation function:</p>
  
  <pre><code>$.validator.addMethod("requiredcountry", function(value, element, arg){
                return arg != value;
           }, "Value must not equal arg.");
  </code></pre>
  
  <p>and this is the rule:</p>
  
  <pre><code>rules:
  {
   country:
   {
           required: true,
           requiredcountry: ""
   }
  }
  </code></pre>
  
  <p>What select2 field should I use for the rule to match?</p>
  
  <p>I appreciate any idea how to make select2 working together with jquery.validation</p>
  
  <p>10x</p>