Merge branch 'development' into model/concept
Add tests and factory for Resources's class methods
Remove Skill model from Schema
Merge branch 'model/concept' into model/requires
Add lesson_plan_id to Requires relationship
Added lesson_plan_id to Requires relationship
Requires relationship need to have a lesson_plan_id to be valid
Add lesson_plan_id to Trains relationship
Update test for Trains relationship, with requirement for lesson_plan_id
Trains relationship requires a lesson_plan_id to be valid
Merge branch 'model/requires' into model/uses
Merge with model/trains
Add lesson_plan_id to Uses relationship
Add lesson_plan_id to Uses relationship spec
Add lesson_plan_id validation to Uses relationship
Merge branch 'model/uses' into development