Fix copyright date; tweak LICENSE formatting
Add python versions to classifiers
Cosmetic formatting tweaks to README.rst
Move everything around for better structure

* move module into a package
* add docs/ directory and move examples there
* add test stub directory
* centralize version information into _version.py and make it available
  in package, setup.py and docs/conf.py files
* tweak docstring formatting
Add Flask docs theme
Add docs/_build to .gitignore
Docs overhaul