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
Merge pull request #453 from mhamrle/credentials_in_xml

Serialize credentials in xml
Rename message/API: getContract -> getInstrumentDefinition.