query = (queryString, oauth) =>
  new Promise((resolve, reject) => {
    org.query(
      {
        query: queryString,
        oauth: oauth
      },
      (error, response) => {
        if (!error) {
          resolve(response.records)
        } else {
          reject(error)
        }
      }
    )
  })
Perform a SOQL Query
@param {string} queryString - SOQL query
@param {object} oauth       - OAuth string received from successful authentication