Added Restructured Text docs

* Added self to CONTRIBUTORS
* Added Contributing guidelines
* Added sphinx setup
* Split requirements.txt into appropriate files
* Added version.py as a central location for version info
Corrected build image
Now using the nose coverage plugin
Added coverage to test requirements
moved flake8 configuration
version bump
Move nose out of package requirements
Merge pull request #17 from micahhausler/documentation

Added Restructured Text docs