Write RSS entry for downloaded comic.

def comicDownloaded(self, comic, filename, text=None):
        """Write RSS entry for downloaded comic."""
        imageUrl = self.getUrlFromFilename(filename)
        size = None
        if self.allowdownscale:
            size = getDimensionForImage(filename, MaxImageSize)
        title = '%s - %s' % (comic.name, os.path.basename(filename))
        pageUrl = comic.referrer
        description = '<img src="%s"' % imageUrl
        if size:
            description += ' width="%d" height="%d"' % size
        description += '/>'
        if text:
            description += '<br/>%s' % text
        description += '<br/><a href="%s">View Comic Online</a>' % pageUrl
        args = (
            title,
            imageUrl,
            description,
            util.rfc822date(time.time())
        )

        if self.newfile:
            self.newfile = False
            self.rss.addItem(*args)
        else:
            self.rss.addItem(*args, append=False)