Adding More Customization

Add Custom tags to button name. Backward Compatibility.
```
markupSet: [
	{name:'<i class="icon-bold"></i>', title:"Font Bold", key:'B', openWith:'[b]', closeWith:'[/b]', className: 'bb-bold'},
	{name:'Tont Italic', key:'I', openWith:'[i]', closeWith:'[/i]', className: 'bb-bold'}
}
```
Example: http://test.hw-lab.com/viewtopic.php?f=3&t=8#markItUpMessage