Moved example scripts from examples to examples/scripts directly

Cleaned up the examples directory by adding a scripts subdirectory.

This makes it a bit clearer which Python files are example cmd2 applications and which are example Python scripts for use with the pyscript command.

Author: tleonhardt

examples/python_scripting.py

@@ -12,7 +12,7 @@
 from the previous command.  This is where the ability to run Python scripts inside a cmd2 application via the pyscript
 command and the "pyscript <script> [arguments]" syntax comes into play.
 
-This application and the "script_conditional.py" script serve as an example for one way in which this can be done.
+This application and the "scripts/conditional.py" script serve as an example for one way in which this can be done.
 """
 import functools
 import os

examples/arg_printer.py renamed to examples/scripts/arg_printer.py

@@ -4,7 +4,7 @@
 
 To run it you should do the following:
     ./python_scripting.py
-    pyscript script_conditional.py directory_path
+    pyscript scripts/conditional.py directory_path
 
 Note: The "cmd" function is defined within the cmd2 embedded Python environment and in there "self" is your cmd2
 application instance.