Fix style's urls (issue #38)

[adrienluitot]

Fixed issue #38.

I don't know if it's okay for you, I made something a bit tricky, maybe it does not correspond to what you would like ? I edited the index.html file in the test folder so you can test the result.

[adrienluitot]

I think I did what you asked. Tell me if there is anything to change!

[danhper]

I just pushed a new version to npm with your changes, thanks again!

[adrienluitot]

Nice :D My pleasure ;)