test file for storing path to hand ranks dat files
added LICENSE.txt with GPL v.2
refactored package structure:
  1. moved all c files to src
  2. moved rayeval module to rayeval package

 setup.py now redefines install_data and generates 7-cards and 9-cards hand ranks files.

 added to setup.py options:  --no-ranks-test, --without-build-ranks, --ranks-dir, --use-ranks-7, --use-ranks-9, --ranks-7-filename, --ranks-9-filename

 added method to locate generated hand ranks files from the setup.py

 path and filename options are now optional