Use integrated Logstash Kibana web interface?

In the README it's specified:

> Kibana has been removed from this cookbook. This is for several reasons:
>
> * Kibana is a fast moving target
> * It violates SRP
> * **Kibana is being integrated into the logstash jar as the default UI**
> * There are two solid cookbooks for using Kibana now
>   * Kibana2 (Ruby version): https://github.com/realityforge/chef-kibana
>   * Kibana3 (HTML/JS version): https://github.com/lusis/chef-kibana
```

It seems that Kibana has since been integrated in the main Logstash repo at https://github.com/logstash/logstash/commit/5d9f53ad88012c2993304936ed6c47a156d84dda.

Any reason not to use this instead of directing people to installing Kibana externally?

I guess we could add a `web` recipe that installs an upstart script to run the Logstash jar with the `web` command. Thoughts?