Please release. Examples do not work with latest release

I'm attempting to use title, version, and banner from examples (like https://github.com/dthree/vorpal/blob/master/examples/descriptors/descriptors.js).

```
.title(chalk.magenta('Vorpal'))
^

TypeError: vorpal.title is not a function
at Object. (/mycode/index.js:10:4)
at Module._compile (module.js:643:30)
at Object.Module._extensions..js (module.js:654:10)
at Module.load (module.js:556:32)
at tryModuleLoad (module.js:499:12)
at Function.Module._load (module.js:491:3)
at Function.Module.runMain (module.js:684:10)
at startup (bootstrap_node.js:187:16)
at bootstrap_node.js:608:3
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
```

These methods exist in master. Can we get a release?