added setup with Dockerfile and Readme.md updates
adding Dockerfile
Merge pull request #455 from grealish/develop

Adding Dockerfile and update Readme.md to support Dockerbuilds
Changed unique_ptr to shared_ptr to hide cppzmq inside library. Fixes notary building.
Merge pull request #456 from murrekatt/develop

Changed unique_ptr to shared_ptr to hide cppzmq inside library. Fixes notary building.
registerNym does not use protobuf
disable protobuf in contract