Rust crate for validating a hostname according to the [IETF RFC 1123](https://tools.ietf.org/html/rfc1123).
```rust
extern crate hostname_validator;
let valid = "VaLiD-HoStNaMe";
let invalid = "-invalid-name";
assert!(hostname_validator::is_valid(valid));
assert!(!hostname_validator::is_valid(invalid));
```