title: Selectize multiple data attributes
body: <p>I want to use selectize for one of my project.</p>
  
  <p>Is it possible to have multiple data attributes on options ?</p>
  
  <p>For example, with one attribute I have :</p>
  
  <pre><code>&lt;option value="{{$type['nom']}}" data-data='{"coeff":{{$type["coeff_principal"]}}}'&gt;{{$type['nom']}}&lt;/option&gt;
  </code></pre>
  
  <p>And :</p>
  
  <pre><code>    render: {
         option: function (data, escape) {
           return "&lt;div data-coeff='" + data.coeff + "'&gt;" + data.text + &lt;/div&gt;"
         }
      },
  </code></pre>
  
  <p>What about multiple attributes ? If I need data-coeff and data-id ?</p>
  
  <p>Thank</p>