Further functionality description update.

README.md

@@ -7,7 +7,7 @@ php-iban
 [![Latest Stable Version](https://poser.pugx.org/globalcitizen/php-iban/v/stable)](https://packagist.org/packages/globalcitizen/php-iban) 
 [![License](https://poser.pugx.org/globalcitizen/php-iban/license)](https://packagist.org/packages/globalcitizen/php-iban)
 
-All parts of an IBAN can be retrieved, including country code, checksum, BBAN, financial institution or bank code, national checksum and where a fixed-length national system is in use, also branch/sort code and account number. Legacy national checksums may also be retrieved, validated and correctly set, where available. IBAN country codes can be coverted in to ISO3166-1 alpha-2 and IANA formats, and the official national currency queried (ISO4217 alpha code format) to ease integration. IBANs can also be converted between human and machine representation. Finally, intelligent suggestions for originally intended input can be made when an incorrect IBAN is detected and is due to mistranscription error.
+All parts of an IBAN can be retrieved, including country code, checksum, BBAN, financial institution or bank code, national checksum and where a fixed-length national system is in use, also branch/sort code and account number. Legacy national checksums may also be retrieved, validated and correctly set, where available. IBAN country codes can be coverted in to ISO3166-1 alpha-2 and IANA formats, and the parent IBAN country acting as registrar for dependent territories as well as the official national currency (ISO4217 alpha code format) can be queried to ease integration. IBANs can also be converted between human and machine representation. Finally, intelligent suggestions for originally intended input can be made when an incorrect IBAN is detected and is due to mistranscription error.
 
 Tested on PHP versions ![PHP 5.3](https://img.shields.io/badge/version-PHP%205.3%2B-lightgrey.svg) ![PHP 5.4](https://img.shields.io/badge/version-PHP%205.4%2B-lightgrey.svg) ![PHP 5.5](https://img.shields.io/badge/version-PHP%205.5%2B-lightgrey.svg) ![PHP 5.6](https://img.shields.io/badge/version-PHP%205.6%2B-lightgrey.svg) ![PHP 7.0](https://img.shields.io/badge/version-PHP%207.0%2B-lightgrey.svg) as well as HHVM and nightly.