Updated Configuration (markdown)

Configuration.md

@@ -1,4 +1,5 @@
 * [Backends](#backends)
+    * [HTTP service configuration](#http-service-configuration)
     * [PushBullet](#pushbullet-configuration)
     * [Apache Kafka](#apache-kafka-configuration)
     * [Local backend](#local-backend-configuration)
@@ -11,17 +12,25 @@
     * [Belkin WeMo Switch](#belkin-wemo-switch)
     * [Text-to-Speech](#text-to-speech-support)
     * [Shell plugin](#shell-plugin)
+    * [HTTP requests plugin](#http-requests-plugin)
+    * [Database plugin](#database-plugin)
 * [Procedures](#procedures)
 * [Event Hooks](#event-hooks)
+* [Mobile notification mirroring](#mobile-notification-mirroring)
+* [Include directive](#include-directive)
 
 Copy `/etc/platypush/config.example.yaml` to `/etc/platypush/config.yaml` (system-wise settings) or `~/.config/platypush/config.yaml` (user-wise settings).
 
 Some configuration snippets:
 
-# device_id
+## device_id
 
 Each target device is identified by a unique device_id in the messages sent over your account. The device_id is the hostname by default, unless a different value is set in config.yaml at the root level.
 
+```yaml
+device_id: some_custom_name
+```
+
 # Backends
 
 Platypush comes by default with an HTTP service as a backend, a [PushBullet](https://www.pushbullet.com/) backend, an [Apache Kafka](https://kafka.apache.org/) backend, and a (quite unstable) local backend based on fifos. Backend configurations start with `backend.` in the `config.yaml`.
@@ -265,7 +274,7 @@ Procedures are lists of actions that will be executed by Platypush.
 
 A procedure can be run:
 
-## Synchronously
+## Synchronous
 
 Configuration name starting with `procedure.sync.`.
 
@@ -305,7 +314,7 @@ procedure.sync.turn_all_lights_on:
                     light: ${light['name']}
 ```
 
-## Asynchronously
+## Asynchronous
 
 Configuration name starting with `procedure.async.`.
 
@@ -426,4 +435,4 @@ To keep the configuration neat and manageable, and/or keep some configuration pa
 include:
     - include/backends.yaml
     - include/assistant_common.yaml
-```
+```