README.md: mention of completion

Damien Nadé · Damien Nadé · commit c5c53201d181 · 2017-09-01T13:58:36.000+02:00
diff --git a/README.md b/README.md
@@ -43,6 +43,7 @@ The argsparse library offers to script developpers the following features:
 * Hook settings
 * Option properties making them excluding each other, aliasing other
   options, or (sic) non-optional.
+* Automatic bash completion generation.
 
 
 ### Requirements, Bash settings
