simplebake: added $cfg->defined method; fixes #1

- Converted existing 'defined $cfg->get(q(variable))' to use
  '$cfg->defined(q(variable))' instead
simplebake: remove comments at ends of blocks

- update copyright/e-mail
Merge branch 'master' of https://github.com/spicyjack/streambake

Conflicts:
	modules/Simplebake/bin/simplebake.pl