Does not correctly match paths on windows systems.

On windows systems the `options.dirRoot` is not correctly resolved. `file.base` seems to use backslashes while `file.path` uses forward slash.

It seems the line:

```
options.dirRoot = options.dirRoot || file.base.replace(/\/$/, "");
```

Should be using:

```
options.dirRoot = options.dirRoot || file.base.replace(/[\/|\\]$/, "");
```

for it to run on windows.
