update README

Author: goktug97

README.md

@@ -59,11 +59,40 @@ spotify-lyrics
 - Update Lyrics: Deletes cached lyrics and fetches lyrics from the internet. 
 - Help: Show keybindings 5 seconds.
 
+### DBUS
+The lyrics can be scrolled via dbus.
+Scroll the lyrics without changing the focus.
+
+#### Python Example
+
+``` python
+import dbus
+
+bus = dbus.SessionBus()
+lyrics = bus.get_object('com.spotify_lyrics.line', '/com/spotify_lyrics')
+lyrics.move(1) # Scroll Down
+lyrics.move(-1) # Scroll Up
+```
+
+#### Bash Example
+
+``` bash
+#!/usr/bin/env bash
+dbus-send --print-reply --dest="com.spotify_lyrics.line"\
+    "/com/spotify_lyrics"\
+    "com.spotify_lyrics.line.move"\
+    int32:$1 > /dev/null
+```
+
+I call this bash script from my i3 config. See below.
+
 ### Example Use Case (i3wm)
 ```i3
 bindsym $mod+Shift+Home exec st -n Lyrics -e spotify-lyrics
 for_window [instance="Lyrics"] floating enable; [instance="Lyrics"] move position center
 for_window [instance="Lyrics"] resize set 644 388
+bindsym $mod+Control+k exec lyrics-move -1
+bindsym $mod+Control+j exec lyrics-move 1
 ```
 
 ### Example Use Case (Emacs)

setup.py

@@ -8,7 +8,7 @@
     long_description = f.read()
 
 setup(name='yet-another-spotify-lyrics',
-      version='2.3.1',
+      version='2.4.0',
       description='Command Line Spotify Lyrics with Album Cover',
       author='Göktuğ Karakaşlı',
       author_email='[email protected]',
@@ -17,7 +17,7 @@
       long_description_content_type='text/markdown',
       url='https://github.com/goktug97/yet-another-spotify-lyrics',
       download_url=(
-          'https://github.com/goktug97/yet-another-spotify-lyrics/archive/v2.3.1.tar.gz'),
+          'https://github.com/goktug97/yet-another-spotify-lyrics/archive/v2.4.0.tar.gz'),
       py_modules=[os.path.splitext(os.path.basename(path))[0]
                   for path in ['spotify_lyrics',
                                'utils',