Add documentation for (de)serializing enum variants

[bestouff]

Let's say I have this enum:

#[derive(Serialize, Deserialize)]
enum Test {
    A(Url, OtherType),
}

The documentation is missing for writing this type correctly - there's probably a magic incantation about #[serde(with = "url_serde")] somewhere but I couldn't find it easily.

[jdm]

The documentation exists in the url_serde crate: https://docs.rs/url_serde/0.2.0/url_serde/#how-do-i-use-a-data-type-with-a-url-member-with-serde

[jdm]

Actually, I guess it's not explicit. You should be able to write A(#[serde(with = "url_serde")] Url, OtherType), I think?

[bestouff]

Thanks. How about adding #502 to help a bit more ?

[nox]

url_serde is gone now, you'll be able to use serde 1.0 in url 2.0.

[bestouff]

Thanks !