README: convert to markdown

README.md

@@ -14,7 +14,7 @@ Copyright/left: 2012-2013,2015,2025 Vincent Riquer - GPLv3 (see doc/GPL-3)
 * SQLite
   http://www.sqlite.org/
 
-### Optional:
+### Optional:
 * vorbis-tools
   http://www.vorbis.com/
     * ogginfo (Ogg Vorbis metadata)
@@ -124,6 +124,8 @@ The steps required for each file depend on the format and destination parameters
 decoded/resampled file) to 3 (if format can't be decoded using sox and
 resampling/normalization is required) tasks.
 
+### V. Running tasks
+
 #### V.1 Running tasks
 While running tasks, AtOM responds to the following keypresses:
 +/-     Increase/decrease max-load