Implement #25

Implemented #25 

This:
```sass
/**
 * @prop {Function} base.default (default) - description
 */
```
will be transformed to:
```js
{
   type : 'Function',
   path : 'base.default',
   default : 'default',
   description : 'description'
}
``` 

It will default to `type:'Map'` if the type is omitted.