Added fix for windows file separators; Added parameters to control slung...

This resolves the windows path separator issue, and also adds parameters for controlling the paths.  You can pre-populate the checkedPaths array or just set ignorePaths = true.

```JavaScript
slung: {
      author: {
        options: {
          /*don't create any folders*/
          ignorePaths: true, 
          /*or don't create these folders*/
          checkedPaths: ['/etc/designs/my-design',
             '/etc/clientlibs/my-clientlib-folder'] 
        }
      }
    }
```