Remove CLI tools

Deprecates `batman server` and all of the command line tools. They add a lot of bloat to the repo, are hard to (and/or are not) maintained, and don't add that much value.

Instead of `batman server`, you can use literally any other server option. The simplest one would be something like `python -m SimpleHTTPServer`. Our preferred option is using the Rails server with `batman-rails`, which just received a major update. But other than that, it's just not worth it for us to maintain our own node server codebase.

As far as the generators go, honestly they just don't provide that much value aside from helping enforce the directory structure. Almost all of the files they generate are empty class definitions. We're going to move to an approach of better documentation and a starter .zip download that contains all of the files and directories you'll need. Of course, `batman-rails` will still be able to generate files for you through the Rails generator system, we just don't want to duplicate all of that functionality in node.

@SoapyIllusions @pushrax @DrewMartin