Interfaces are missing

Thanks for your template!

I think I found a bug. Interfaces (tag `@interface`) are missing in the output documentation.

Example:

```
/**
 * @interface
 */
myInterface = {
    /**
     * Foo.
     */
    foo : function() {}
}
```

The default jsdoc template does output it (on the right side, part with "Interfaces" title). But jaguarjs-jsdoc seems to omit it completely.
