Instantsearch.js: Add default values for display only widgets (currentRefinements, breadcrumb)

[mthuret]

If you go here: https://community.algolia.com/instantsearch.js/v2/widgets/breadcrumb.html#example

And click on "run", then nothing appears.

I would have expect to see the breadcrumb displayed (with a Hierarchical Menu if we want the user to play with it).

[bobylito]

Displaying multiple widgets might be an issue though :/

[Haroenv]

I think this is an issue for currentRefinements too

[francoischalifour]

I think this issue is solved with the widgets showcase. Feel free to reopen if not!