add ncyBreadcrumbGetLink function to step object

[ghost]

add ncyBreadcrumbGetLink function to step object so that if your parent state params are not available right when the page loads, you can still have them available when the page is done loading

[ncuillery]

Hi, thanks for the PR.

I need more information to understand the problem you solve here.

Did you face a situation where the parent state params are not available when the breadcrumb is generated (in other words, when the $viewContentLoaded event is fired) ?

How do you use this function ncyBreadcrumbGetLink ? In a custom template I suppose.

A plunker demonstrating the problem fixed by this PR could be great too (you can fork this one)