add mpd status readme

examples/mpd_status/README.md

@@ -1,19 +1,4 @@
-A demo showing a Full-Screen Image
-==================================
+MPD Client Demo
+===============
 
-*The image size is chosen to fit a 1200 * 825 display!*
-
-Image by David REVOY / CC BY (https://creativecommons.org/licenses/by/3.0)
-https://commons.wikimedia.org/wiki/File:Durian_-_Sintel-wallpaper-dragon.jpg
-
-Configuration
--------------
-
-Before you can use this example, you need to set your WiFi credentials. Simply run
-```sh
-idf.py menuconfig
-```
-
-Then go to `Application Settings > WiFi Connection Settings` and enter your credentials.
-
-Afterwards you can build (and flash) the app.
+Runs a music player daemon client on the EPD and displays album art and the current playlist.