Add the compact mode

Add the `compact` option which strips useless `_path` suffixes in path helper functions. It should be useful in a situations when a "Routes" object has only path functions, so instead repeat again and again 

```js 
Routes.users_path()
// it will become
Routes.users()
```
In the example fo previous option `Example` is used a example value of an option. So I would using `example` here.
And write something like: `Sample route call when option is set to true:`.