Remove debugging print statement (oops!)
Workaround a bug in the rewriter

Ocassionally, the rewriter would fail claming that the post author was
`None`. This just wraps an exception handler around it. I'd prefer to
find the proper solution to this, but in the meantime...
Renaming of repository modules

"autothreader.py" is now "main.py", and other similar changes. Execution
is now mentioned in the README.
Add README section on contributing.