Include html5lib for BeautifulSoup

BeautifulSoup needs lxml or html5, have included html5lib.

Also latest BeautifulSoup 4.1.3

html5lib/tests/runtests.py

@@ -0,0 +1,20 @@
+import sys
+import os
+import glob
+import unittest
+
+def buildTestSuite():
+    suite = unittest.TestSuite()
+    for testcase in glob.glob('test_*.py'):
+        module = os.path.splitext(testcase)[0]
+        suite.addTest(__import__(module).buildTestSuite())
+    return suite
+
+def main():
+    results = unittest.TextTestRunner().run(buildTestSuite())
+    return results
+
+if __name__ == "__main__":
+    results = main()
+    if not results.wasSuccessful():
+        sys.exit(1)