Track if the parent object was a saved instance, or just an instance
In the factory Kind, only call create:: if we have saved the parent object
ID will not be set when calling attributesFor
Fixed save docblocks
Merge pull request #127 from GrahamCampbell/only-call-instance-fixes

Fixed save docblocks
Fixed up the kind class
Merge pull request #129 from GrahamCampbell/only-call-fixes

Fixed up the kind class
Merge pull request #126 from thephpleague/only-call-instance

Only call ::create in Factory Kind when we have called ::create on the original object