Updated geojson to 1.2.2

[ocefpaf]

1.2.2 (2015-07-13)

• Fix tests by including test file into build
  • tests: include data.geojson into the PyPI distfile jazzband/geojson#61
• Build universal wheels
  • https://packaging.python.org/en/latest/distributing.html#universal-wheels

1.2.1 (2015-06-25)

• Encode long types correctly with Python 2.x
  • long is also a valid type jazzband/geojson#57

1.2.0 (2015-06-19)

• Utility function to validate GeoJSON objects
  • add validation for geojson objects jazzband/geojson#56