[man] document aubiocut --create-first

diff --git a/doc/aubiocut.txt b/doc/aubiocut.txt
index 8023460..c578133 100644 (file)
--- a/doc/aubiocut.txt
+++ b/doc/aubiocut.txt
@@ -50,6 +50,8 @@ OPTIONS
   --cut-until-nslices n  How many extra slices should be added at the end of
   each slice (default 0).
 
+  --create-first  Alway create first slice.
+
   -h, --help  Print a short help message and exit.
 
   -v, --verbose  Be verbose.