polybar: add mpd module

.config/polybar/config.ini

@@ -32,7 +32,7 @@ font-0 = mononoki-12;1
 
 modules-left = ewmh
 modules-center = date
-modules-right = filesystem pulseaudio xkeyboard memory cpu wlan eth
+modules-right = mpd filesystem pulseaudio xkeyboard memory cpu wlan eth
 
 cursor-click = pointer
 cursor-scroll = ns-resize
@@ -137,6 +137,15 @@ date-alt = %Y-%m-%d %H:%M:%S
 label = %date%
 label-foreground = ${colors.foreground}
 
+[module/mpd]
+type = internal/mpd
+
+host = 127.0.0.1
+port = 6600
+interval = 2
+
+label-song = %title%
+
 [settings]
 screenchange-reload = true
 pseudo-transparency = false