code: function (config) {
          this.config = core.extend({
              connection: 'mongodb://localhost/mvcjs',
              options: {}
          }, config);
          this.db = mongoose.connect(this.config.connection, this.config.options);
          logger.info('Mongo.construct:', this.config);
      }
docs: Constructor
  @param config
  @private
  @description
  All options are listed on
  http://docs.mongodb.org/manual/reference/connection-string/