Add storage. (#169)

Gopkg.lock

Gopkg.toml

api/api.pb.go

api/api.pb.gw.go

api/api.proto

api/api.swagger.json

migrate/migrate-packr.go

migrate/sql/20180103142001_initial_schema.sql

server/api_friend.go

server/api_notification.go

server/api_storage.go

server/api_unlink.go

server/api_user.go

server/core_friend.go

server/core_notification.go

server/core_storage.go

server/runtime_nakama_module.go

tests/core_storage_test.go

tests/runtime_test.go

vendor/github.com/davecgh/go-spew/.gitignore