doc: split up yambar-modules

Closes #15

doc/yambar-modules-mpd.5.scd

@@ -0,0 +1,79 @@
+yambar-modules-mpd(5)
+
+# NAME
+mpd - This module provides MPD status such as currently playing artist/album/song
+
+# TAGS
+
+[[ *Name*
+:[ *Type*
+:[ *Description*
+|  state
+:  string
+:  One of *offline*, *stopped*, *paused* or *playing*
+|  repeat
+:  bool
+:  True if the *repeat* flag is set
+|  random
+:  bool
+:  True if the *random* flag is set
+|  consume
+:  bool
+:  True if the *consume* flag is set
+|  volume
+:  range
+:  Volume of MPD in percentage
+|  album
+:  string
+:  Currently playing album (also valid in *paused* state)
+|  artist
+:  string
+:  Artist of currently playing song (also valid in *paused* state)
+|  title
+:  string
+:  Title of currently playing song (also valid in *paused* state)
+|  pos
+:  string
+:  *%M:%S*-formatted string describing the song's current position
+   (also see _elapsed_)
+|  end
+:  string
+:  *%M:%S*-formatted string describing the song's total length (also
+   see _duration_)
+|  elapsed
+:  realtime
+:  Position in currently playing song, in milliseconds. Can be used
+   with a _progress-bar_ particle.
+|  duration
+:  int
+:  Length of currently playing song, in milliseconds
+
+# CONFIGURATION
+
+[[ *Name*
+:[ *Type*
+:[ *Req*
+:[ *Description*
+|  host
+:  string
+:  yes
+:  Hostname/IP/unix-socket to connect to
+|  port
+:  int
+:  no
+:  TCP port to connect to
+
+# EXAMPLES
+
+```
+bar:
+  left:
+    - mpd:
+        host: /run/mpd/socket
+        content:
+          string: {text: "{artist} - {album} - {title} ({end})"}
+```
+
+# SEE ALSO
+
+*yambar-modules*(5), *yambar-particles*(5), *yambar-tags*(5), *yambar-decorations*(5)