Move the SSO to a testing section with a link to the documentation.

Home.md

@@ -44,6 +44,13 @@ Vaultwarden implements the Bitwarden APIs required for most functionality, inclu
   * [Remove Send](https://bitwarden.com/help/policies/#remove-send)
   * [Send options](https://bitwarden.com/help/policies/#send-options)
 
+## Testing features
+
+Features available in the `testing` docker image:
+
+* [Single Sign-On (SSO)](https://bitwarden.com/help/about-sso/), see [Documentation](https://github.com/dani-garcia/vaultwarden/wiki/Enabling-SSO-support-using-OpenId-Connect)
+
+
 ## Missing features
 
 Issue [#246](https://github.com/dani-garcia/vaultwarden/issues/246) contains the comprehensive list of feature requests, both features of the official server that are missing in Vaultwarden, as well as enhancements specific to Vaultwarden.
@@ -57,7 +64,6 @@ Features that may be added as time permits (contributions are always welcome):
 
 Features that probably won't be added unless contributed:
 
-* [Single Sign-On (SSO)](https://bitwarden.com/help/about-sso/)
 * [Custom roles](https://bitwarden.com/help/user-types-access-control/#custom-role)
 * Certain enterprise policies ([UI not open source](https://github.com/bitwarden/clients/tree/main/bitwarden_license/bit-web/src/app/admin-console/policies), would probably need to be configured via admin page):
   * [Require single sign-on authentication](https://bitwarden.com/help/policies/#require-single-sign-on-authentication)