Released version 2 which now includes a command utility as well!
simply go to C:\Program Files (x86)\Sinvise Systems\Shutdown Timer
in cmd type stexec /shutdown /duration 20
in order to initiate a shutdown in 20 minutes.
for immediate shutdown just enter stexec /shutdown
For help options just enter stexec /?
Also there are other new changes in the program.
Download and install the program from: Shutdown Timer