Adapt README: `:force_non_association_create` is rendered obsolete.
Adapt README: `:force_non_association_create` is rendered obsolete.

I hope. I will not remove it yet for backward 
compatibility reasons. 
Not sure if somebody actually needs an object to be
_not_ created on the association. Maybe for 
other ORM's?

ikhakoo/cocoon,chrise86/cocoon,chrise86/cocoon,nathanvda/cocoon,vtamara/cocoon,treble37/cocoon,chrise86/cocoon,asiniy/cocoon,asiniy/cocoon,ikhakoo/cocoon,treble37/cocoon,ikhakoo/cocoon,nathanvda/cocoon,vtamara/cocoon,vtamara/cocoon,asiniy/cocoon,nathanvda/cocoon,treble37/cocoon