Example is outdated

[stevenhuyn]

In the example:

file_name.name() fails because it's actually a Result.

let mut ntfs = Ntfs::new(&mut fs).unwrap();
let root_dir = ntfs.root_directory(&mut fs).unwrap();
let index = root_dir.directory_index(&mut fs).unwrap();
let mut iter = index.entries();

while let Some(entry) = iter.next(&mut fs) {
    let entry = entry.unwrap();
    let file_name = entry.key().unwrap();
    println!("{}", file_name.name());
}