Routes demo should be using binding instead of string

[feeloor]

Use binding instead of string on this line:
https://github.com/rangle/augury-examples/blob/master/src/app/shared/header/header.component.html#L13

change:
routerLink="item.routerLinkPath"

to
[routerLink]="item.routerLinkPath"