message: 1. adding implementation to default constructor of Measurement.
diff: @@ -49,7 +49,7 @@ using namespace Json;
  class Measurement {
  public:
  - Measurement();
  + Measurement(){}
  Measurement(string protocolName, int partyId, int numOfParties, int numOfIteration);
  Measurement(string protocolName, int partyId, int numOfParties, int numOfIteration, vector<string> names);
  ~Measurement();
  