changed the default RevitPythonShell.xml to include an example of user defined variables. Removed default script, as it is not used anymore.
changed the default RevitPythonShell.xml to include an example of user defined variables. Removed default script, as it is not used anymore.

dspeckhard/revitpythonshell,dspeckhard/revitpythonshell,architecture-building-systems/revitpythonshell,architecture-building-systems/revitpythonshell