setting Router#isFirstRoute to false in order for views to fork logic

This is an alternate solution to #1.

There would also need to be a change to [the example project](https://github.com/rosy-components/example/blob/0ecf61fb3ab8f0e7d0ce6206fad3916e6565e760/views/Page.js#L26-L28) to something like the following.

```javascript
if (this.router.isFirstRoute) {
    $.ajax(this.router.path).done(this.proxy(function (data) {
```