Using params to dynamically passing data

Key points:

 - mixins
 - params

Using params to dynamically passing data

Key points:

 - mixins
 - params

Router.State is simply a proxy for `this.context.router`.

Note: there is no support for mixins when using React with **ES6** classes. In that case, we have to resort to context.

Update descriptions for example 16
Update descriptions for example 16
