add `gobang -h`

3 years ago · eca8ad783a
parent 67444416d4
commit eca8ad783a
1 changed files with 1 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -55,6 +55,7 @@ $ gobang
 ```

 ```
+$ gobang -h
 USAGE:
    gobang [OPTIONS]