Fix RSS Feed Error

Fix rss feed plugin is a wordpress plugin, and it can fix wordpress rss feed error "Error on line 2: The processing instruction target matching "[xX][mM][lL]" is not allowed." while you burn wordpress rss feed from www.feedburner.com, also fix error "XML or text declaration not at start of entity" in firefox, and fix error "XML declaration not at beginning of document" in opera. It helps to increase the accurasy and speedup your RSS feeds.