Documenting Component Composition

I'm writing docs for ember-animated. There are a lot of shared arguments because we composed components out of other components. [Here is an example](https://github.com/ember-animation/ember-animated/blob/8377b96a34678fc02c90ba9861ec2afca7eeff95/addon/templates/components/animated-value.hbs) where `key`, `use`, `rules`, etc are all shared options that should share the same documentation as on the `animated-each`.

It seems like the [`@uses`](http://yui.github.io/yuidoc/syntax/index.html#uses) feature in the yuidoc could handle this case but it doesn't work.