[Live] Removing docs showing the proxied component

[weaverryan]

Q	A
Bug fix?	yes
New feature?	no
Tickets	None
License	MIT

3 small things:

1. The docs were wrong - calling this.component.set() does not, on its own, trigger a re-render. this.component.render() is also needed.
2. When using getComponent(), the Proxy wrapped object is not returned, so doing things like this.someModel = 'bar' does not work. And I think we shouldn't make it work - the Proxy is just some unnecessary magic and it would add complexity to introduce it here.
3. The interval was never cleared - minor, but we were running the interval a few extra times after returning times.

Cheers!