hello/README.md
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| Greet people from the command line | 1 | # hello |
| 2 | ||
| 3 | Greets people from the command line. | |
| 4 | ||
| Add Usage section to README | 5 | ## Usage |
| 6 | ||
| 7 | | Argument | Description | | |
| 8 | | -------- | ----------- | | |
| 9 | | `NAME` | Optional. The name to greet. Only the first argument is read. Defaults to the `USER` environment variable, then to `world`. | | |
| 10 | ||
| Greet people from the command line | 11 | ```sh |
| 12 | $ cargo run -- Ada | |
| 13 | Hello, Ada! | |
| 14 | ``` | |
| 15 | ||
| 16 | With no name it greets whoever is signed in. | |
| 17 | ||
| 18 | ## Develop | |
| 19 | ||
| 20 | ```sh | |
| 21 | cargo test | |
| 22 | ``` |