code: function postQuery(statArr) {
    var options = {
        method: 'POST',
        baseUrl: this.NEO4J_BASEURL,
        url: this.NEO4J_ENDPT,
        headers: {
          'Accept': 'application/json; charset=UTF-8',
          'Content-type': 'application/json'
        },
        json: {
          statements: statArr
            // [{statement: query, parameters: params},
            // {statement: query, parameters: params}]
        }
      }
      // call to the db server, returns a Promise
    return request(options).then(resolver).catch(function(e) {
      throw new Error(JSON.stringify(e))
    })
  }
docs: POST a comitting query to the db.
  @private
  @param  {Array}   statArr  Array of statement objects.
  @param  {Function} callback Function with (err, res, body) args for the query result.
  @return {Promise}  A promise object resolved with the query results from the request module.