Update README.md

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@ -6,6 +6,15 @@ ascii (text) convert text to ascii art
img (url) convert an image to ascii art - now in color!
The image plugin uses the 99 color extended irc color set.
Be sure your plugin supports 99 color output.
Three presets: fast (default), slow, and insane.
Sast uses the cie1976 color difference algorithm,
slow uses the cie_cmc algorithm and insane uses the
cie2000 algorithm. Which looks best is a matter of preference,
slower settings generally result in more colorful images
but take considerably longer to generate a color map.
scroll (url) playback of ansi art files from the web
fontlist to get list of fonts