docs: Note feature needed in demo

This commit is contained in:
Ed Page 2021-12-07 15:02:14 -06:00
parent 6001e66721
commit 48a5e4931a

View file

@ -65,6 +65,7 @@ fn main() {
// more program logic goes here...
}
```
*(note: requires feature `derive`)*
```bash
$ demo --help
clap [..]