Use configuration file in the HOME directory
```rust use home_config::HomeConfig; use serde::{Deserialize, Serialize};
struct Options { name: String, age: u32, }
let config = HomeConfig::new("yourname", "config.json"); // /Users/name/yourname/.config/config.json
// Parse
let options = config.parse::
// Save to file config.save(&options).unwrap(); ```