added missing dependencies
Add xPath sample for harvest.py
Correct link to sample csv
Various fixes that prevented successfull harvesting and extraction in my environment
Merge pull request #1 from staffanm/feature/setup-requirements

added missing dependencies, courtesy of @staffanm
Merge pull request #2 from staffanm/feature/misc-robustness

Various fixes to make stuff actually run. Readability and stability fixes
cleanup
cleanup