Bump OpenWormData
Adding a test for `Property.one`
Updates to readme

- Wrapping in `str()` for cached results datatypeProperty results
  in SimpleProperty.get
Providing a more helpful message on BadConf

- removing extraneous lines from README.md
Adding a nicer message for #55
Merge branch 'alpha0.5' of github.com:openworm/PyOpenWorm into alpha0.5