new formula: onetime

New formula: onetime. Assists users in creating one-time pads. Still actively supported upstream, and has gathered a lot of renewed interest thanks to Hak5 covering the tool recently.

(*This is my first formula created entirely from scratch, and I'm pretty thrilled to have actually managed to make it work around Homebrew's syntax & formula requirements. Extremely thoroughly tested, so hopefully will pass the build bot first time*).
I think you're misunderstanding the multiple arguments; each one is a parameter rather than a separate command.
You should try `system "#{bin}/onetime", "with", "some", "parameters"` and try the same outside Ruby with `onetime with some parameters && echo fish`. If `fish` is printed after the command output then it returned a successful exit code. If not, it did not.