Preview support for Webp images

Perhaps Apple has addressed this in later versions of OS X, but I saw something online where you can copy & paste a line into Terminal and be able to use Preview to see .webp images (they also show up in the preview column in Finder):

https://github.com/emin/WebPQuickLook

You'll have to scroll down to the part where they give you the line to put in Terminal:

curl -L https://raw.github.com/emin/WebPQuickLook/master/install.sh | sh

I'm no expert, so I can't 100% confirm that this is safe. If someone at Apple can let us know it's safe, that would be awesome.