Creation of Serializers for the Skill and User objects
Creating a Partnership value object and tests for a partnership serializer
Creating a Hash Method to validate the id, since it will be used everywhere the hash is being used, creating retrieval methods for the PartnershipManager
Merge pull request #53 from phpmentoring/partnership_retrieval

Creating a Hash Method to validate the id, since it will be used everywh...
Resolving merge conflict
Merge pull request #52 from phpmentoring/serializers

Serializers
Merge branch 'master' of github.com:phpmentoring/mentor-app into api_user_endpoints
Added the partnership resources to the user endpoint response