Merging seperate tutorial folder.

Still some cleaning and one hand merge to do.
Merged pathVisualizer

Now produces a plot using pyplot. not very pythonic, but better
than printing path to standard out. This closes #5 - for now.
TODO: Something nicer without a hardcoded invalid statespace
This plotPathExample assumes the stateSpaceValidator to be the first
one we created in tutorial with invalid box -2:x:2, -2:y:2.

Seeing Issue #8 wrt creating a proper class, we can look into creating
a pathVisualizer class later, something quicker than saving paths and
loading them into the GUI, or this which also just loads a saved path.txt

I saw issue #8.