Unable to zip Windows "Junction" folders.

[tivnet]

@joaomoreno Hi, below is the error I am getting when one of the folders to be included in the ZIP file is a "junction" (that's a symbolic folder link in MSWindows).

events.js:167
      throw er; // Unhandled 'error' event
      ^

Error: EISDIR: illegal operation on a directory, read
Emitted 'error' event at:
    at DestroyableTransform.onerror (path-to\node_modules\vinyl-fs\node_modules\readable-stream\lib\_stream_readable.js:558:12)
    at DestroyableTransform.emit (events.js:182:13)
    at onwriteError (path-to\node_modules\vinyl-fs\node_modules\readable-stream\lib\_stream_writable.js:250:10)
    at onwrite (path-to\node_modules\vinyl-fs\node_modules\readable-stream\lib\_stream_writable.js:268:5)
    at WritableState.onwrite (path-to\node_modules\vinyl-fs\node_modules\readable-stream\lib\_stream_writable.js:106:5)
    at afterTransform (path-to\node_modules\vinyl-fs\node_modules\readable-stream\lib\_stream_transform.js:104:5)
    at TransformState.afterTransform (path-to\node_modules\vinyl-fs\node_modules\readable-stream\lib\_stream_transform.js:79:12)
    at path-to\node_modules\vinyl-fs\lib\src\getContents\bufferFile.js:9:14
    at FSReqWrap.readFileAfterClose [as oncomplete] (internal/fs/read_file_context.js:37:12)