Add tooltip option

[eiling]

Add an option to include tooltips using the 'title' attribute

The tooltip option value can be either 'value' or 'text' and corresponds to which attribute of the option will be used for the tooltip.

Examples:

<select name="languagejs">
  <option value="ru">Russian</option>
  <option value="fr">French</option>
  <option value="pt">Portuguese</option>
  <option value="zh">Chinese</option>
</select>
<script>
cuteform($('select[name=languagejs]'), {
  'tooltip': 'value',  // results in title="ru"
  'images': {
    'ru': 'images/ru.png',
    'fr': 'images/fr.png',
    'pt': 'images/pt.png',
    'zh': 'images/zh.png',
  }
});
</script>

<select name="languagejs">
  <option value="ru">Russian</option>
  <option value="fr">French</option>
  <option value="pt">Portuguese</option>
  <option value="zh">Chinese</option>
</select>
<script>
cuteform($('select[name=languagejs]'), {
  'tooltip': 'text',  // results in title="Russian"
  'images': {
    'ru': 'images/ru.png',
    'fr': 'images/fr.png',
    'pt': 'images/pt.png',
    'zh': 'images/zh.png',
  }
});
</script>