Updated to use tshark program from the install Wireshark program.
updated tshark scripts to use common "tshark.bat" script which contains actual location of tshark program.
updated path to np.bat script
updated iperf to use iperf.exe in apps directory instead of scripts directory.
updated to use nmap from "apps" directory instead of scripts directory.
Added a script to execute an base64 encoded powershell command.