[exwm] Adjust layer README to match current standards

layers/+window-management/exwm/README.org

@@ -1,13 +1,18 @@
-* EXWM contribution layer for Spacemacs
+#+TITLE: EXWM layer
 
-** Table of Contents                                                  :TOC@4:
- - [[#exwm-contribution-layer-for-spacemacs][EXWM contribution layer for Spacemacs]]
-   - [[#description][Description]]
-   - [[#install][Install]]
-     - [[#note-about-display-managers][Note about Display Managers]]
-     - [[#not-having-display-managers][Not having Display Managers]]
-     - [[#osx][OSX]]
-   - [[#key-bindings][Key bindings]]
+#+TAGS: layer|tool
+
+[[file:img/spacemacsOS.jpg]]
+
+* Table of Contents                                                 :TOC_5_gh:noexport:
+  - [[#description][Description]]
+    - [[#features][Features:]]
+  - [[#install][Install]]
+    - [[#layer][Layer]]
+    - [[#note-about-display-managers][Note about Display Managers]]
+    - [[#not-having-display-managers][Not having Display Managers]]
+    - [[#osx][OSX]]
+  - [[#key-bindings][Key bindings]]
 
 ** Description
 The time has arrived when one can finally use Emacs as a Window Manager, long
@@ -27,19 +32,15 @@ awesome and having nice defaults would make more people dive into it and the
 project would receive more attention and contributions which will only make it
 more awesome, so if you try it and like it, share it!
 
-This is how it looks like:
-
-[[img/spacemacsOS.jpg]]
+** Features:
+- Support for using Spacemacs as window manager
 
 ** Install
-To use this contribution add it to your =~/.spacemacs=
-
-#+begin_src emacs-lisp
-  (setq-default dotspacemacs-configuration-layers '(exwm))
-#+end_src
+To use this configuration layer, add it to your =~/.spacemacs=. You will need to
+add =exwm= to the existing =dotspacemacs-configuration-layers= list in this
+file.
 
 *** Note about Display Managers
-
 This is most common among Ubuntu and derivative users:
 
 LightDM, GDM, and other Display managers that need a session file will need you
@@ -50,19 +51,16 @@ make sure the [[file:files/exwm-start][exwm-start script]] is in your PATH, you
 select the EXWM session instead of the Ubuntu one and you should be alright.
 
 *** Not having Display Managers
-
 If you use Arch, Gentoo, or any other Linux, most probably you'll start your
 configurations via a ~.xinitrc~ file, just append ~exwm-start~ to the end of
 that file and you should be fine. I do recommend to check the [[https://github.com/ch11ng/exwm/wiki][EXWM Wiki]] for more
 details.
 
 *** OSX
-
 If you are an OSX user, please report back on whether this works with xQuartz,
 always back up your data before attempting to try stuff like this.
 
 ** Key bindings
-
 As other window managers the ~s~ or *Super* key (Windows Key) is the one that
 is the prefix to every action. We'll use a lot of ~s~.