Update README.md

GHOSCHT · GHOSCHT · commit 59534d1f726f · 2021-04-28T15:50:00.000+02:00
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 # OpenVPN for Docker
 
-OpenVPN server in a Docker container complete with an EasyRSA PKI CA.
+OpenVPN server in a Docker container complete with an EasyRSA PKI CA that works without port forwarding. All you need is a [ngrok](https://ngrok.com/) account and a spare [Gmail](https://mail.google.com/) account to send ngrok notifications from.
 
 #### Upstream Links
 
