First version of my PowerShell profile

Includes:
	- pyRunning: Lists the PID and commandline text for every
	  process with the name 'python.exe'

	- killPythonProcess: Kills the first python process running with
	  a command line string that contains the given substring. For
	  example, if a python process is started by typing 'python
	  myScript var1 var2' you could kill it with the function call
	  killPythonProcess 'myScr' or 'myScript' or 'var1' or 'v'. If
	  multiple matches are found, only the first is killed.