message: set a default mediaConfiguration to avoid addon crash
diff: @@ -64,6 +64,7 @@ var generateToken = function (req, callback) {
  token.role = role;
  token.service = currentService._id;
  token.creationDate = new Date();
  + token.mediaConfiguration = 'default';
  if (typeof currentRoom.mediaConfiguration === 'string') {
  token.mediaConfiguration = currentRoom.mediaConfiguration;
  }
  