Merge pull request #20 from neighborly/im-users-show

Users#show
Add active_model_serializers as dependency
Add strong parameters and implicit render to controllers
New endpoint POST /tags
Organize modules inclusion

Also it fixes the bug with respond_with returning empty body in some cases.
Use only respond_with on create a tag
Merge pull request #21 from neighborly/jl-create-tag

New endpoint POST /tags
New GET /tags endpoint
Bundle update