README format improvements

README.md

@@ -25,15 +25,15 @@ Features
 Usage
 =====
 
-Usage: periodic [ARGS] [COMMAND]
+	Usage: periodic [ARGS] [COMMAND]
 
 It counts upward (incrementing by 1, default) or downward (decrementing by 1,
--d) starting at integer BEGIN (-b, default: 0) with a configurable floating
-point interval of SECS seconds (-n, default 1.0) until infinity (default) or up
-to a maximum number of COUNT intervals (-c). It can operate silently and not
-print this counter (-s). It optionally executes a COMMAND per interval which it
-can also fork (-f) in case the command is expected to take longer than SECS
-seconds.
+`-d`) starting at integer `BEGIN` (`-b`, default: 0) with a configurable
+floating point interval of `SECS` seconds (`-n`, default 1.0) until infinity
+(default) or up to a maximum number of `COUNT` intervals (`-c`). It can operate
+silently and not print this counter (`-s`). It optionally executes a `COMMAND`
+per interval which it can also fork (`-f`) in case the command is expected to
+take longer than `SECS` seconds.
 
 	-f       fork COMMAND
 	-s       silent, do not print counter