Fix docs name in Travis
Re-arrange loop
Include docs in sdist, so that packages can build docs.
Merge pull request #10 from tomprince/docs

Include docs in sdist, so that packages can build docs.
Add docstrings to auto-generated methods
Polish README and motto
Add simple benchmark script
A slightly better intro into examples
Fix MANIFEST.in
Introduce new Attribute class
Add support for default factories
Add changelog entry
Make the teaser use Attribute