This macro enables derive(FromFile), it should be used alongside from_file

Example

#[macro_use]
extern crate serde_derive;
extern crate serde;

#[macro_use]
extern crate from_file_derive;
extern crate from_file;

use from_file::FromFile;

#[derive(Deserialize, FromFile)]
struct Person {
name: String
}

fn main() {
let path = "test/fixtures/person.json";
let person = Person::from_file(path).expect("deserialize from file");
assert_eq!(person.name, String::from("Shane"));
}