adding docs for org apps

Author: stevengill

docs/_basic/authenticating_oauth.md

@@ -13,6 +13,8 @@ Bolt for Python will create a **Redirect URL** `slack/oauth_redirect`, which Sla
 
 Bolt for Python will also create a `slack/install` route, where you can find an **Add to Slack** button for your app to perform direct installs of your app. If you need any additional authorizations (user tokens) from users inside a team when your app is already installed or a reason to dynamically generate an install URL, you can pass your own custom URL generator to `oauth_settings` as `authorize_url_generator`.
 
+Bolt for Python automatically includes support for [org wide installations](https://api.slack.com/enterprise/apps). Org wide installations can be enabled in your app configuration settings under **Org Level Apps**.
+
 To learn more about the OAuth installation flow with Slack, [read the API documentation](https://api.slack.com/authentication/oauth-v2).
 
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