Lots of debugging, tutorial update, screenshots update

FUTURE.rst

chplot.py

combfinder.py

docs/source/_static/Screenshot01.png

docs/source/_static/Screenshot02.png

docs/source/_static/Screenshot03.png

docs/source/_static/Screenshot04.png

docs/source/_static/Screenshot05.png

docs/source/_static/Screenshot06.png

docs/source/_static/custom.css

docs/source/combfinding.rst

docs/source/index.rst

docs/source/tutorial.rst

findComb.py

generalio.py

trackComb.py