missing tranform css for IE9

[Bazzz]

Just wanted to let you know that I really like your emoticon plugin. What a brilliant idea to make a css/js-only approach to emoticons!
Anyway. I noticed the following "bug":
In IE9 the rotation doesn't work because the CSS is missing a transform with the -ms- prefix.
I added the following line to your CSS to make it work also in IE9:

span.css-emoticon {
-ms-transform: rotate(90deg);
}

I hope you could possibly add this to your code for future users.

Kind regards
Bas