Router Proposal: adopt convention for route alias

I propose that we adopt an enforced convention of naming convention were route names are TitleCase: `MyRoute` rather than camelCase `myRoute`.

I think it helps distinguish between URLs and the DSL. Consider:

```
@RouteConfig([
  { path: '/foo', component: FooCmp, as: 'MyRoute' }
])
class MyCmp
```

~~~I also think this goes nicely with #3496.~~~
