Table of contents updated

Author: Webklex

README.md

@@ -29,6 +29,9 @@ read and parse existing mails and much more.
     - [oAuth](#oauth)
     - [Events](#events)
     - [Commands](#commands)
+        - [Event driven](#event-driven)
+        - [Custom command](#custom-command)
+        - [Service setup](#service-setup)
 - [Support](#support)
 - [Known issues](#known-issues)
 - [Security](#security)