--stats does not work

[noraj]

When running the misc --stats option I just get a normal build

prez --stats
[warn] Source folder not specified: use cwd
[warn] Destination folder not specified: use 'build'
[info] copy ../../../../../../../usr/lib/node_modules/prez/data/dynamic-theme.js to build/js
[info] copy ../../../../../../../usr/lib/node_modules/prez/node_modules/reveal.js/css to build
[info] copy ../../../../../../../usr/lib/node_modules/prez/node_modules/reveal.js/js to build
[info] copy ../../../../../../../usr/lib/node_modules/prez/node_modules/reveal.js/lib to build
[info] copy ../../../../../../../usr/lib/node_modules/prez/node_modules/reveal.js/plugin to build
[info] copy ../../../../../../../usr/lib/node_modules/prez/node_modules/highlight.js/styles to build/css/highlight
[info] copy ../../../../../../../usr/lib/node_modules/prez/data/such-notes-print.js to build/js
[info] copy ../../../../../../../usr/lib/node_modules/prez/data/such-notes-print.css to build/css
[info] copy ../../../../../../../usr/lib/node_modules/prez/data/such-notes-popup.css to build/css
[info] copy ../../../../../../../usr/lib/node_modules/prez/data/such-notes-popup.js to build/js
[info] write build/plugin/notes/notes.html (10242 bytes)
[warn] cannot copy css (file not found)
[warn] cannot copy js (file not found)
[info] copy images to build
[warn] cannot copy media (file not found)
[info] copy ../../../../../../../usr/lib/node_modules/prez/data/index.html to build
[info] write build/index.html (15085 bytes)

I'm pretty up-to-date:

prez --version
4.7.0

and

node --version
v5.9.1

[Delapouite]

This option has not been released yet.
Yes, I recognize it's a bit disturbing to see it in already on the README.

[noraj]

OK, maybe you can put in a TODO/ROADMAP part ?