File Diff

This module provides an atomic file diffing function for use in unit tests.

The diff_files() function takes two file handles and determines returns true if they point to identical files.

```rust use filediff::{difffiles}; use std::io::{File};

let mut file1 = match File::open(&Path::new("./src/lib.rs")) { Ok(f) => f, Err(e) => panic!("{}", e), }; let mut file2 = match File::open(&Path::new("./src/lib.rs")) { Ok(f) => f, Err(e) => panic!("{}", e), };

diff_files(file1, file2); // true ```

The diff() function takes string representations of the files and returns true if the strings represent real files and those files are identical.

```rust use file_diff::{diff};

diff("./src/lib.rs", "./src/lib.rs"); // true ```