set own name and version

Now, delevts with version option shows
```
> delevts --version
cli v0.6.4
```
but, correctly
```
>  delevts --version
delevts v0.0.4
```

Refer to [this document](https://github.com/chriso/cli).
> To set your own app name and version, use cli.setApp(app_name, version)