Add Listener options and filtering hooks

Enable Listener hooks that allow for complex match rules.

Example: only execute commands for users who have performed 2FA with hubot.

```coffeescript
Listener.hooks.push (robot, listener, options, message, cb) ->
  if options.auth?.require_2fa
    if robot.auth.getUserAuthState(message.message.user)
      cb(null, true)
    else
      message.reply "This command requires two factor authentication. Please run `#{robot.name} auth me` to level up."
      cb(null, false)
  else
    cb(null, true)
```
Looks like that is actually being handled in the TextListener constructor.