Add support for recent versions of simplejson

The constructor of JSONObjectEncoder is now more generic in terms of accepted kwargs.

Final fix for python_requires

Should now be installable for all 2.6.* and 2.7.* Python interpreters

Fix release information

• Convert README.md to README.rst
• add __version__ information
• Update setup.py
  • set correct url
  • add download_url
  • set correct version
  • add classifiers
  • parse README.rst for long_description
  • add missing copyright header
  • correct python_requires string

Preparations for PyPi release

0.2.2

Merge branch 'master' into public

First public release

Update PT file

- remove VERSION key/value
- change sources release path