Render radio as button/image simple_form
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I'm using SimpleForm and was able to create a list of radios. Is there a way that I can render them as buttons or images? 

I did some search and tried this:

    - f.collection_radio_buttons(:category, [['Male', 'icon_male'], ['Female', 'icon_female']], :first, :last) do |category|
      = category.label { image_tag("/assets/icons/16x16/#{category.text}.png") + category.radio_button  }

However, it still renders the radio icon, see below

![enter image description here][1]

Is there a way to render it as just images that's selectable or as buttons similar to Twitter Bootstrap button? http://twitter.github.com/bootstrap/javascript.html#buttons

Also, this requires me to specify the list of images in the view, I need it to be driven off the model, something like `category.image_url`

  [1]: http://i.stack.imgur.com/ZwqVO.png
