Added frame iterator explanation comment

        # While the iterator is not closed

        try:

            while True:

                # reset stream for next frame

                # Reset the stream for the next frame

                self.stream.seek(0)

                self.stream.truncate()

                # to stream, read the new frame

                # Sleep for the approximate camera framerate

                time.sleep(1 / self.camera.framerate * 0.1)

                # yield the result to be read

                # Get the latest frame data from the stream

                frame = self.stream.getvalue()

                # ensure the size of package is right

                # This loop iterates faster than the PiCamera will collect

                # frames. On iterations between frames, the buffer will be

                # empty (because we truncated it earlier). In these cases

                # we just pass and loop again until a frame is actually present.

                # This also means that the size of FrameStream is always 1 frame,

                # since we truncate it here before a new frame can be appended.

                if len(frame) == 0:

                    pass

                else: