[#114] Added info on `account_activation_required` setting to config readme.

config/config.md

@@ -69,6 +69,7 @@ config :pleroma, Pleroma.Mailer,
 * `banner_upload_limit`: File size limit of user’s profile banners
 * `registrations_open`: Enable registrations for anyone, invitations can be enabled when false.
 * `invites_enabled`: Enable user invitations for admins (depends on `registrations_open: false`).
+* `account_activation_required`: Require users to confirm their emails before signing in.
 * `federating`: Enable federation with other instances
 * `allow_relay`: Enable Pleroma’s Relay, which makes it possible to follow a whole instance
 * `rewrite_policy`: Message Rewrite Policy, either one or a list. Here are the ones available by default: