The README doesn't explain what s.gif is

[airblade]

The README gives <img src="s.gif" name="high"> as an example of how to render a sprite in one's HTML. It wasn't clear what s.gif was and I assumed it was the image generated by sprite-factory containing all the sprites. Only when I happened to look at the examples images did I realise it's a 1x1 pixel image.

Perhaps a quick note in the README would clarify this.

[jakesgordon]

I added a note to the README.

Thanks!