Update README.md

Author: barryvdh

README.md

@@ -125,7 +125,7 @@ Gateway | 2.x | 3.x | Composer Package | Maintainer
 [Cybersource SOAP](https://github.com/Klinche/omnipay-cybersource-soap) | ✓ | - | dabsquared/omnipay-cybersource-soap | [DABSquared](https://github.com/DABSquared)
 [DataCash](https://github.com/digitickets/omnipay-datacash) | ✓ | - | digitickets/omnipay-datacash | [DigiTickets](https://github.com/digitickets)
 [Docdata Payments](https://github.com/Uskur/omnipay-docdata-payments) | ✓ | - | uskur/omnipay-docdata-payments | [Uskur](https://github.com/Uskur)
-[Dummy](https://github.com/thephpleague/omnipay-dummy) | ✓ | - | omnipay/dummy | [Del](https://github.com/delatbabel)
+[Dummy](https://github.com/thephpleague/omnipay-dummy) | ✓ | ✓ | omnipay/dummy | [Del](https://github.com/delatbabel)
 [eGHL](https://github.com/dilab/omnipay-eghl) | ✓ | ✓ | dilab/omnipay-eghl | [Xu Ding](https://github.com/dilab)
 [ecoPayz](https://github.com/dercoder/omnipay-ecopayz) | ✓ | - | dercoder/omnipay-ecopayz | [Alexander Fedra](https://github.com/dercoder)
 [EgopayRu](https://github.com/pinguinjkeke/omnipay-egopaymentru) | ✓ | - | pinguinjkeke/omnipay-egopaymentru | [Alexander Avakov](https://github.com/pinguinjkeke)