Filenames containing backslashes are handled incorrectly

[asquared]

On Linux:

mkdir testdir
touch testdir/a\\b

var filewalker = require('filewalker');

filewalker("testdir") 
    .on("file", function(p, s) {
        console.log(p);
    })
    .walk();

output is a/b instead of the expected a\b.

[oleics]

Good finding.

The lines causing this issue:

https://github.com/oleics/node-filewalker/blob/588f5b5/lib/filewalker.js#L39-L41