Added TOC.

docs/configuration-guide.md

@@ -3,6 +3,33 @@
 
 This page goes into detail on what is possible to configure within the engine.
 
+<!-- TOC -->
+
+- [Aura Engine Configuration Guide](#aura-engine-configuration-guide)
+    - [Station](#station)
+    - [Soundcard](#soundcard)
+    - [Recordings](#recordings)
+    - [Streams](#streams)
+    - [Fallbacks](#fallbacks)
+    - [Database](#database)
+    - [Monitoring](#monitoring)
+    - [Web User Interface](#web-user-interface)
+    - [Administrator Emails](#administrator-emails)
+    - [API Endpoints](#api-endpoints)
+    - [Fading](#fading)
+    - [Logging](#logging)
+    - [User](#user)
+    - [Socket](#socket)
+    - [Redis](#redis)
+    - [Frequently Asked Questions](#frequently-asked-questions)
+        - [Which Audio Interface / Soundcard is compatible with Aura?](#which-audio-interface--soundcard-is-compatible-with-aura)
+        - [ALSA Settings](#alsa-settings)
+            - [Install: I don't want to install all Liquidsoap Audio plugins. How?](#install-i-dont-want-to-install-all-liquidsoap-audio-plugins-how)
+            - [In the Liquidsoap Logs I get 'Error when starting output output_lineout_0: Failure("Error while setting open_pcm: Device or resource busy")!'. What does it mean?](#in-the-liquidsoap-logs-i-get-error-when-starting-output-output_lineout_0-failureerror-while-setting-open_pcm-device-or-resource-busy-what-does-it-mean)
+            - [How can I find the audio device IDs, required for settings in engine.ini?](#how-can-i-find-the-audio-device-ids-required-for-settings-in-engineini)
+
+<!-- /TOC -->
+
 ## Station
 
 These properties are used to style the included web applications such as *Track Service*