Update README.md

Author: hrokafullur

README.md

@@ -1,4 +1,7 @@
-- [IKEv2-setup](#ikev2-setup)
+# IKEv2-setup
+
+## Table of Contents
+
   * [What?](#what-)
     + [VPN server](#vpn-server)
     + [VPN clients](#vpn-clients)
@@ -11,9 +14,6 @@
   * [Why?](#why-)
     + [Why IKEv2?](#why-ikev2-)
 
-
-# IKEv2-setup
-
 ## What?
 
 A Bash script that takes Ubuntu Server 17.10 (and probably also 17.04 or 16.10, but these are no longer tested) from clean install to production-ready IKEv2 VPN with strongSwan. Comments and pull requests welcome.