Merge Projects

I started writing a swfobject-rails gem before I noticed you had already made one!

I've added specs with complete coverage. But the big change is: `#swf_tag` generates static embed code, along with a `<script>` tag for registering the SWFObject. Look at the [README](https://github.com/petebrowne/swfobject-rails/blob/master/README.md) for more info.

What do you think?