Go bob walker, go!

Port bob walker to Go.

Handle sleeping while in drunk mode and add a turbo mode for true parallelism.
Ish...  `flag` doesn't care if you do `-foo` or `--foo`, they're treated as equivalent.  There's no constraint that your options have to be single characters.  However, at present I don't think there's a way to have more than one flag to an option (i.e. I don't think it's easy to have `-t` and `--turbo` be the same thing)

More info: https://groups.google.com/forum/#!topic/golang-nuts/bkqf4-RDj5Q
tl;dr flag implements [gflags](https://code.google.com/p/gflags/) style options, not getopt style.