Enhancement request: "example.scala.html" configuration support

[OguzhanSaltik]

http://www.freeformatter.com/html-formatter.html gives me formatted scala templates.

@(products: List[Product])(implicit m: Messages)
@main(Messages("application.name")) {
<dl class="products">
    @for(product <- products) {
    <dt>@product.name</dt>
    <dd>@product.description</dd>
    }
</dl>
}

I want to format my scala.html files (like freeformatter.com) via your plugin. I tried lots of configurations. Can I do this?