Project depends on Python 2 (doesn't work with Python 3).

This is because of the use of pygments for syntax highlighting.
Currently, pygments requires Python 2.x only.

This also adds a .python-version for anyone using pyenv.
Adds some more documentation about how to work with the site.
Merge pull request #55 from konklone/python

Site depends on Python 2 (doesn't work with Python 3)