Supported options information in add example.
diff --git a/examples/add.c b/examples/add.c
index b4bc6a1..f1e7b7b 100644
--- a/examples/add.c
+++ b/examples/add.c
@@ -67,7 +67,7 @@ int main (int argc, char** argv)
struct print_payload payload = {0};
if (argc < 2) {
- fprintf(stderr, "usage: add file-spec [file-spec] [...]\n");
+ fprintf(stderr, "usage: add [-n|--dry-run] [-v|--verbose] file-spec [file-spec] [...]\n");
return 1;
}