public void writeAnimatedGIF(List<GIFFrame> frames, OutputStream os) throws Exception {
    	writeAnimatedGIF(frames.toArray(new GIFFrame[0]), os);
    }
Writes a list of GIFFrame as an animated GIF

@param frames a list of GIFFrame
@param os OutputStream for the animated GIF
@throws Exception
subs/gif-revert/src/main/java/com/engineer/gif/revert/lib/AnimatedGIFWriter.java