- remove “make uninstall” target which was broken a long time ago
- move very install action to the setup.py (alias “make install” to
  “python setup.py install”
- add some stuff to “make clean”
- update the config.py to search the default config file using
  pkg_resources (more reliable than dirname(__file__))
- install the html doc only if available
- use README.rst for the setup.py long_description

- also, update the copyright notice to 2015