Add VivaPayments

Author: delatbabel

README.md

@@ -192,6 +192,7 @@ Gateway | Composer Package | Maintainer
 [Vantiv](https://github.com/lemonstand/omnipay-vantiv) | lemonstand/omnipay-vantiv | [LemonStand](https://github.com/lemonstand)
 [Veritrans](https://github.com/andylibrian/omnipay-veritrans) | andylibrian/omnipay-veritrans | [Andy Librian](https://github.com/andylibrian)
 [Vindicia](https://github.com/vimeo/omnipay-vindicia) | vimeo/omnipay-vindicia | [Vimeo](https://github.com/vimeo)
+[VivaPayments](https://github.com/delatbabel/omnipay-vivapayments) | delatbabel/omnipay-vivapayments | [Del](https://github.com/delatbabel)
 [WebMoney](https://github.com/dercoder/omnipay-webmoney) | dercoder/omnipay-webmoney | [Alexander Fedra](https://github.com/dercoder)
 [WeChat](https://github.com/labs7in0/omnipay-wechat) | labs7in0/omnipay-wechat | [7IN0's Labs](https://github.com/labs7in0)
 [WechatPay](https://github.com/lokielse/omnipay-wechatpay) | lokielse/omnipay-wechatpay |  [Loki Else](https://github.com/lokielse)