Include html5lib for BeautifulSoup

BeautifulSoup needs lxml or html5, have included html5lib.

Also latest BeautifulSoup 4.1.3

html5lib/__init__.py

@@ -0,0 +1,17 @@
+""" 
+HTML parsing library based on the WHATWG "HTML5"
+specification. The parser is designed to be compatible with existing
+HTML found in the wild and implements well-defined error recovery that
+is largely compatible with modern desktop web browsers.
+
+Example usage:
+
+import html5lib
+f = open("my_document.html")
+tree = html5lib.parse(f) 
+"""
+__version__ = "0.95-dev"
+from html5parser import HTMLParser, parse, parseFragment
+from treebuilders import getTreeBuilder
+from treewalkers import getTreeWalker
+from serializer import serialize