V1.0.1- Bug Fixes

fileprocessor.py
================
After running the post through markdown, we parse the result to facilitate
making minor adjustments to the markup, which then must be reserialized prior to
shipping out via XMLRPC.  The `tostring` function provided by lxml didn't handle
certain tags correctly, notably `iframe` tags, so we've implemented our own
serializer.  We've also taken care of escaping stray '&' characters that
markdown doesn't.

html2md.py
==========
- Now handles nested elements like ***bold and emphasis***.
- Also makes sure to escape HTML entities like '&', '<' and '>' prior to running
through the lxml parser.
- Checks for `iframe` tags to add proper end tag.

setup.py
========
- Bumped version