public void writeFrame(OutputStream os, Bitmap frame) throws Exception {
    	writeFrame(os, frame, 100); // default delay is 100 milliseconds
    }
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