Update README.md

Author: chrisnojima-zoom

README.md

@@ -64,3 +64,5 @@ Ph/Hao4ZzCQDM76Jr/aCUJIbxyc2zco=
 The changes here are small: we've reduced our characters to base62 plus some period markers, and only at the ends of words. PGP messages often get mangled by different apps, websites, and smart text processors.
 
 Of course, **saltpack** can output binary, too. Either way, it's what's inside the format that matters. You can read the [spec](https://saltpack.org/encryption-format-v2) for the details.
+
+Post issues to: https://github.com/keybase/keybase-issues