fix spec that's also fixed in master
Added support for fetching models using a block rather than only via calling a method on the model.
Allow arguments sent to association() to be in any order. Removed unnecessary attribute on AssociationField.
Allow arguments sent to association() to be in any order. Removed unnecessary attribute on AssociationField.
Merge branch 'allow_association_args' of github.com:mavenlink/brainstem into allow_association_args
Removed unwanted file.
Require json_name and fixed specs.
merge in master
Merge pull request #5 from mavenlink/allow_association_args

Allow providing a block instead of a method_name argument to association()