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Link to a CDN in your README, so your users can test the tool more easily.

It's not my tool, but do you know about rawgithub.com? Just use the Github version if all you're doing is testing.

I wouldn't encourage this, even for testing. Github isn't built to be a CDN -- it's not super performant.

rawgithub.com is not raw.github.com. You can read about it on the homepage: http://rawgithub.com/