title: simple_form render radio button group with  <image>( X ) Label with twitter bootstrap?
body: <p>Im trying for some time to use simple_form to create the below example but + the label and fixing some styling. Anyone knows how to fix:</p>
  
  <ul>
  <li>remove the <strong>2</strong>'s no idea where they come from (seems strange i18n bug on production it throws a whole bunch of I18n in )</li>
  <li>Have the text Male or Female after the radio button</li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/BvLQl.png" alt="label output"></p>
  
  <p>Is the result from below code:</p>
  
  <pre><code>     .clear
      = f.label "Gender"
      = f.collection_radio_buttons(:gender, [['Male', 'icon_male'], ['Female', 'icon_female']],
                                   :first, :last,
                                   :item_wrapper_class =&gt; 'horizontal',
                                   ) do |gender|
        = gender.label { image_tag("/assets/icons/16x16/#{gender.text}.png") + gender.radio_button  }
  
      .clear
      .ruler
  </code></pre>