Remove/re-evaulate support for moving CLI scripts into local Python installation

[mradamcox]

The initial version of the toolbox was designed with the provision for moving the entire module into the user's local Python installation, to support integration into other Python scripting. This process was documented. However, the methodology used was fragile, and did not follow standard package distribution best practives. The inclusion of this documentation and any provisions for it within the code should be re-evaluated and probably removed.

The existing "CLI TERMINAL" file should be re-revaluated at the same time as this ticket is completed. It currently relies on access to arcpy, which should not be assumed, but it may still have utility without arcpy.

[mradamcox]

Regarding CLI TERMINAL.py see #25. It will be removed from the current release and doesn't need to be documented at this time.