Should not recommend component name without dash

```
~/Desktop/TRAINING/app/place-my-order
❯ donejs add component home.component
? The tag name of the component (home) pmo-home
```

The recommendation of `home` should be something with a dash like `my-home`.

Related file:

https://github.com/donejs/generator-donejs/blob/master/component/index.js#L51