Adding docs about indented JSON/XML

Related to #612.

* At this time there are no docs about view and ajax in english.
to improve the UX (mainly on mobile version), can you remove 
the code comment and add as simple text? something like this:
```java
result.use(json()).indented().from(carro).serialize();
```
>dessa forma o resultado seria:

```js
{
    'carro': 
    {
       'cor': 'azul'
    }
}
```