Convert the project to setuptools, and a console_script

[eklitzke]

I saw you post this on IRC the other day, so I took a look. Cool project!

This converts the project to be a standard Python module, with an installable CLI program using setuptools. This will make it so the project can be uploaded to PyPI, meaning that users could install the program by literally just typing pip install bitcoind-ncurses2. I tried to make the change as minimal as possible.

[esotericnonsense]

Can you rebase this on master? :)