Pandashape

- Corrected project homepage in setup.py
- Resolved a bug that prevented single-column transformer definitions from resolving correctly (e.g. 'Gender' rather than ['Gender'])
- Added `DistributionDescriber` to describe skew and identify outliers.
- Added `DTypesDescriber` to summarize frame data types.
- Added pypi version badge.

- Updated README
- `GenericTransformer` and `GenericDescriber` have been renamed to `Transformer` and `Describer` respectively for succinctness.
- Expansive refactoring to improve internal design and the external API surface.
- `Scaling` is now exported from the `pandashape` module.
- New describer: `CorrelationDescriber`

Renamed `MassLabelEncoder` to `CategoricalEncoder` for clarity.

Fixed a build config issue that failed to include required files.

Initial publish!