Add autoRenderToScreen as a property to <EffectComposer />

[ozzyonfire]

This could be handy when we are rendering some post effects out to a render texture with a copy pass.

The workaround now is to do it from within a child component and useContext, but it would save us from creating some extra stuff.

[pushmatrix]

+1 to this.

Can you share how you're doing it now with a workaround?