code: function simplecryptor (password, options = {}) {
    const db = this
  
    // set default ignore
    options.ignore = ['_id', '_rev', '_deleted'].concat(options.ignore)
  
    const simpleCryptoJS = new SimpleCryptoJS(password)
  
    // https://github.com/pouchdb-community/transform-pouch#example-encryption
    db.transform({
      incoming: function (doc) {
        return cryptor(simpleCryptoJS, doc, options.ignore, true)
      },
      outgoing: function (doc) {
        return cryptor(simpleCryptoJS, doc, options.ignore, false)
      },
    })
  }
docs: pouch function to encrypt and decrypt
  @param  {string} password
  @param  {Object} [options={}]
  @return {Object | Promise}