scanner: expand help string

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/src/scanner.c b/src/scanner.c
index ace6633..5124000 100644 (file)
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -34,6 +34,10 @@ static int
 usage(int ret)
 {
        fprintf(stderr, "usage: ./scanner [client-header|server-header|code]\n");
+       fprintf(stderr, "\n");
+       fprintf(stderr, "Converts XML protocol descriptions supplied on "
+                       "stdin to client headers,\n"
+                       "server headers, or protocol marshalling code.\n");
        exit(ret);
 }