Captcha

This extension provides a very minimalistic captcha form.

###Useage Simply insert the captcha form into your template

  <form ...>
      ...
      {{ captcha_form() }}
  </form>

Then validate the response in your controller

  function POST($matches = array()) {
      if(CaptchaAPI::is_valid($_REQUEST['catpcha_token'], $_REQUEST['captcha_answer'])) {
          // success
      } else {
          // failed
      }
  }

That's it! A new token with a valid answer is generated each time someone views the page. These could pile up so the extension will automatically remove expired captcha tokens upon page load.