Add GNU public license v3
Append .txt to LICENSE file
Add MANIFEST file for distutils
Add setup.py for distutils package distribution
Ignore distutils generated MANIFEST file
Add config file for local UNIX installs
Restructure from script into package.

Brake up the original uvspecgen into several
modules including a ui, uvspec, and version module.
Add uvspecgen script to package the ui and uvspec
modules for quick UV-Vis spectra generation.
Stop ignoring dist/
Add dist/ for release tarballs