Convert Resource spec to use string keys for json field
Convert ResourceValidator to use string keys for field data (json field)
Convert Resource factory to use string keys for field 'data'
Merge branch 'model/uses' into development
Merge branch 'model/resource' into development
Merge branch 'model/uses' into model/lesson_plan
Create a Uses relationship from LessonPlan to Resources upon creating the lesson plan
Merge branch 'model/lesson_plan' into development
Add Trains relationship
Update Exhibits's arbitary link spec
Merge branch 'model/uses' into development
Merge branch 'model/exhibits' into development
Merge branch 'development' into model/trains
Add factory for Trains relationship
Add standar spec for a relationship
Add standard model code for a relationship
Fix factory naming: should be 'factory :trains'
Merge branch 'model/trains' into development
Rename rake task for starting/ending neo4j test db
Add sample concepts