Add sphinx to docs

Merge pull request #91 from stchris/prepare-1.2.0

Prepare 1.2.0 release

Merge pull request #39 from stchris/feature/flake8

Feature/flake8

Version 1.1.0

Docs fetch the version from the main module.

Made URL/filename/string source distinction clear. Checked support

for Python 2.5, 2.6 and 2.7. Bumped version to 0.4.0

Readme code style

Version 0.3

Pushed version to 0.2

PEP-8