i just hadn't noticed in the standalone script because the script did in fact end, but when called
from pomodoroprompt.py itself, which keeps running, the window hung, froze, freezed, broke, was a
problem. And i thought it was somehow because it was called from another file or program but really
it was just this missing destroy that is somehow not in many examples.
Well, init function. Point is our calling program shouldn't have to think
about windows showing all or GTK main anything!
The main trick mentioned last commit wasn't this call to Gtk.main() but rather
the if __name__ == '__main__' bit.
