AUTHOR: Darren Nix
	Version: 0.1
	Date:	2011-9-7
	Site: www.darrennix.com
	License: Apache 2.0

	Crawls a site to find unique page URLs and returns them as a list.
	Ignores query strings, badly formed URLs, and links to domains
	outside of the starting domain.
	
	Inspired by sitemap_gen from Valdimir Toncar

	DEPENDENCIES:
	BeautifulSoup HTML parsing library